Read and choose the correct answer to complete the letter.

"Dear Diana,

My parents and I are (1)…… to know that you passed the end-of-term examination. Congratulations! I think that with your excellence, your (2)……… to become a good doctor will come true.

My younger sister was really (3)………. to receive a hair curling machine from you on her birthday and she asked me to say “thank you” to you. However, she doesn't know the (4)…….. to use that machine. It seems (5)……. for her to use it.

I was relieved that your mother had recovered after a serious surgery. It was (6)………. to believe that she had to suffer from a severe disease for a long period of time. Please give her my love.

I am excited that you're going to visit my beautiful city. I want to show you my (7)……… to take you to famous places.

We're looking forward to seeing you. It will be (8)………. for me to welcome you to my house.

Write me soon and confirm your arrival date and time.

Love,

Sarah"

5. It seems (5)……. for her to use it.

Sleep is a natural process, and although a lot have been written about the subject, it is still surrounded by mystery. It is used by some as an escape from the world, and regarded by others as an irritating waste of time: some people get by on very little, others claim they cannot exist without at least ten hours, but nobody can do without sleep completely.
Our night’s sleep does not just consist of a steady phase of gradually deepening sleep. It alternates between two stages: Non-dreaming or ordinary sleep, and REM (rapid eye movement) or dreaming sleep. As soon as we fall asleep, we go straight into non-dreaming sleep for an hour or so, then into REM sleep for about 15 minutes, then back into non-dreaming sleep. It alternates in this way for the rest of the night, with non-dreaming sleep tending to last longer at the beginning of the night. Non-dreaming sleep occupies three-quarters of our night’s sleep, about a quarter of it deep and the rest fairly light. 
It is widely believed that sleep repairs the body and makes good the damage caused by being awake. However, its main function is to refresh the brain. Experts believe that probably only about two-thirds of our sleep is necessary for repairing and refreshing the brain, with the most valuable sleep coming in the first few hours of the non-dreaming period, the last few hours of sleep are not so essential. The brain can manage quite well with reduced sleep as long as it is uninterrupted sleep. 
The quality of sleep is important. A study conducted in the USA looked at short sleepers, who slept for 5.5 hours on average, and long sleepers, who had 8.5 hours or more. It is discovered after a variety of tests that the long sleepers were poor sleepers, had twice as much REM sleep as the short sleepers, appeared to sleep longer to make up for poor sleep, and did not wake up in the morning refreshed. Similarly, people who sleep deeply do not necessarily get a better quality of sleep than shallow sleepers. Deep sleepers can feel tired the following day, so six hours of good sleep is worth more than eight hours of troubled sleep.

Which of the following is NOT discussed in the passage?

Choose the word or phrase among A, B, C or D that best fits the blank space in the following passage.

Generation gap refers to the difference in the ways of thinking and perception in the people of two different generations which results in behavioral differences, and sometimes, (26)_______between them. In other words, it is the difference in the thinking of the people of older and younger generations that creates the (27)_______of understanding between them. The most common example of generation gap is seen in the family between parents and their children. It is not only because of the gap in age but also because of the way parents (28)_________to a particular situation.

Advancement technology has led to the generation gap in this modern world. Children tend to spend most of their time with their digital devices and busy with social media that they do not discuss their problems with their parents. The Internet (29)________solutions to most of the problems that children needn't ask their own parents for help, (30)_________the communication and leading to a generation gap.

Generation gap occurs not only between parents and children but also between teachers and students. Students are likely to enjoy the classes of an open-minded teacher, who shows mutual (31)________to the students. The teachers, who tend to keep their students under unnecessary strict disciplines and practise hard ways to make them obey the orders, are usually disliked by the students. This narrows minded thinking, especially (32)________in the teachers of the older generation, eventually creates a gap between the students and teachers.

Another difference is the use of technology. Young teachers tend to use more digital devices is class for their lessons that has a good (33)_________on the students. Students take more interest and participate actively in the class discussion. An old teacher has (34)_______ frequent use of electronic devices that makes lessons boring, which is not enjoyed by the students and it creates a gap between them.

To (35)________the generation gap, parents or teachers must be close to their children. They should show interest and give time to the children, have open communication, and allow the child to feel free in all the situations.

Question 28.........................

The classic Neanderthals, who lived between about 70,000 and 30,000 years ago, shared a number of special characteristics. Like any biological population, Neanderthals also showed variation in the degree to which those characteristics were expressed. Generally, they were powerfully built, short and stocky, with the lower parts of their arms and legs short in relation to the upper parts, as in modern peoples who live in cold environments. Neanderthal skulls were distinctive, housing brains even larger on average than those of modern humans, a feature that may have had more to do with their large, heavy bodies than with superior intelligence. Seen from behind, Neanderthal skulls look almost spherical, but from the side they are long and flattened often with a bulging back. 
The Neanderthal face, dominated by a projecting and full nose, differed clearly from the faces of other hominids; the middle parts appear to be pulled forward (or the sides pulled back), resulting in a rather streamlined face shape. This peculiarity may have been related to the greater importance (in cultural activities as well as food processing) of the front teeth, which are large and part of a row of teeth that lies well forward in the head; it may reflect a reduction in importance of certain jaw muscles operating at the sides of the face; or it may reflect an adaptation to cold. Whether it results from any or all of these three factors or from other, undiscovered causes, this midfacial projection is so characteristic that it unfailingly identifies a Neanderthal to the trained eye. Neanderthal teeth are much more difficult to characterize: the front teeth are large, with strong roots, but the back teeth may be relatively small. This feature may have been an adaptation to cope with heavy tooth wear.

What does the passage mainly discuss?

Political and family values within society have impacted upon the modern family structure. Traditionally, it has been the man’s role to be the breadwinner for the family- providing the funds to pay for food and shelter. However, due to the many new and unique responsibilities placed upon families, in numerous cases both men and women- fathers and mothers- have had to enter the workforce. Generally, the reasons for both being involved in the workforce revolve around the need to add to the family’s current financial base. To a lesser extent, the need to interact with “adults” in a stimulating work environment is another popular reason. Whatever their reasons, for many families, the decision for father and mother to go out of home and join the labor force has led to a number of side effects within the home which, in turn, impact upon their performance as employees. Many researchers agree that attitudes towards work are carried over into family life. This spillover can be positive or negative. Positive spillover refers to the spread of satisfaction and positive stimulation at work resulting in high levels of energy and satisfaction at home. If the amount of research is to be taken as an indication, it would seem that positive spillover is not a dominant occurrence in the workplace with most research focusing on the effects of negative spillover. Often pointing out the incompatible nature of work and family life, the research focuses on problems and conflict at work which has the effect of draining and preoccupying the individual, making it difficult for him or her to participate fully in family life.
Social scientists have devised a number of theories in an attempt to explain the work-family dynamic. Compensation theory is one which has been widely used. It assumes that the relationship between work and family is negative by pointing out that high involvement in one sphere- invariably the work sphere- leads to low involvement in the other. As an individual advances within a career, demands typically fluctuate from moderate to more demanding and if the advancing worker has younger children, this shift in work responsibilities will usually manifest itself in the form of less time spent with the family. Researchers subscribing to this theory point out that the drain on family time is significantly related to work-family conflict with an escalation in conflict, as the number of families increase.

According to the passage, positive spillover__________  .

Political and family values within society have impacted upon the modern family structure. Traditionally, it has been the man’s role to be the breadwinner for the family- providing the funds to pay for food and shelter. However, due to the many new and unique responsibilities placed upon families, in numerous cases both men and women- fathers and mothers- have had to enter the workforce. Generally, the reasons for both being involved in the workforce revolve around the need to add to the family’s current financial base. To a lesser extent, the need to interact with “adults” in a stimulating work environment is another popular reason. Whatever their reasons, for many families, the decision for father and mother to go out of home and join the labor force has led to a number of side effects within the home which, in turn, impact upon their performance as employees. Many researchers agree that attitudes towards work are carried over into family life. This spillover can be positive or negative. Positive spillover refers to the spread of satisfaction and positive stimulation at work resulting in high levels of energy and satisfaction at home. If the amount of research is to be taken as an indication, it would seem that positive spillover is not a dominant occurrence in the workplace with most research focusing on the effects of negative spillover. Often pointing out the incompatible nature of work and family life, the research focuses on problems and conflict at work which has the effect of draining and preoccupying the individual, making it difficult for him or her to participate fully in family life.

Social scientists have devised a number of theories in an attempt to explain the work-family dynamic. Compensation theory is one which has been widely used. It assumes that the relationship between work and family is negative by pointing out that high involvement in one sphere- invariably the work sphere- leads to low involvement in the other. As an individual advances within a career, demands typically fluctuate from moderate to more demanding and if the advancing worker has younger children, this shift in work responsibilities will usually manifest itself in the form of less time spent with the family. Researchers subscribing to this theory point out that the drain on family time is significantly related to work-family conflict with an escalation in conflict, as the number of families increase.

What is the main focus of this passage?

Choose the word or phrase among A, B, C or D that best fits the blank space in the following passage.

Generation gap refers to the difference in the ways of thinking and perception in the people of two different generations which results in behavioral differences, and sometimes, (26)_______between them. In other words, it is the difference in the thinking of the people of older and younger generations that creates the (27)_______of understanding between them. The most common example of generation gap is seen in the family between parents and their children. It is not only because of the gap in age but also because of the way parents (28)_________to a particular situation.

Advancement technology has led to the generation gap in this modern world. Children tend to spend most of their time with their digital devices and busy with social media that they do not discuss their problems with their parents. The Internet (29)________solutions to most of the problems that children needn't ask their own parents for help, (30)_________the communication and leading to a generation gap.

Generation gap occurs not only between parents and children but also between teachers and students. Students are likely to enjoy the classes of an open-minded teacher, who shows mutual (31)________to the students. The teachers, who tend to keep their students under unnecessary strict disciplines and practise hard ways to make them obey the orders, are usually disliked by the students. This narrows minded thinking, especially (32)________in the teachers of the older generation, eventually creates a gap between the students and teachers.

Another difference is the use of technology. Young teachers tend to use more digital devices is class for their lessons that has a good (33)_________on the students. Students take more interest and participate actively in the class discussion. An old teacher has (34)_______ frequent use of electronic devices that makes lessons boring, which is not enjoyed by the students and it creates a gap between them.

To (35)________the generation gap, parents or teachers must be close to their children. They should show interest and give time to the children, have open communication, and allow the child to feel free in all the situations.

Question 32....................

Read the following passage and mark the letter A, B, C, or D on your answer sheet to choose the word or phrase that best fits each of the numbered blanks.

Mai is my neighbor. She turned sixteen recently and her parents (46) _______ a birthday party for her. I was one of those invited. The party began at about three (47) ­­_______ the afternoon. There were about twenty of us gathering in Mai’s house. She didn’t like having the party at a restaurant (48) ­­_______ it is noisy and expensive.

We gave presents to Mai and she (49) ­­_______ opened them. It must really be exciting to receive all those presents. After that Mai’s mother served us soft drinks and biscuits. We then listened to music and played cards. The winners were given prizes. At about four-thirty, Mai’s mother brought out the birthday cake. It was beautifully decorated with pink and white icing. (50) ­­_______ colorful candles sat in the middle of the cake. We all clapped our hands eagerly and sang “Happy Birthday” as she blew out the candles and cut the cake. We helped ourselves to slices of the delicious cake and sang all the songs that we knew.

Finally, at about six in the evening, the party came to an end. We were all tired but happy. The parents of other children came to collect them by motorbikes. I helped Mai and her mother clean up the mess we had made. After that, I walked home, which was only three doors away.

Câu 50: ............................

Read the passage, and choose the correct answer A, B, C or D for each question.

Approximately one in two thousand people in Viet Nam has a significant hearing loss. Students who have been deafened in early childhood can be very different to students who have lost hearing later in life in terms of educational disadvantage. For example, their range of vocabulary may be limited, which in turn may affect their level of English literacy.

Deaf and hard of hearing students can sometimes prefer visual learning strategies. This can be a challenge in an environment where much essential information is delivered exclusively by word of mouth.

Students with a hearing loss may need to use assistive technology to participate in class. This assistive technology can be the laptop where software such as Skype can be used to deliver interpreters or captioning. For some it will be in the form of listening devices. For others, it will be a combination of technology that includes both listening devices and computer based software.

The impact of hearing loss can cause delays in receiving learning material. Students who need information transcribed from tape must sometimes wait for a significant period of time for this to happen. This needs to be considered in terms of developing suitable timelines for the completion of work for each student.

Students with hearing loss may appear isolated in the learning environment. The possibility for social contact and interaction with other students is often limited, and this isolation or separateness may have an impact on learning. Participation and interaction in tutorials may be limited. Students who cannot hear the flow and nuances of rapid verbal exchange will be at a disadvantage.

Students who have been deafened in early childhood can be very different to students have lost hearing later in life because________.

Choose the word or phrase among A, B, C or D that best fits the blank space in the following passage.

Generation gap refers to the difference in the ways of thinking and perception in the people of two different generations which results in behavioral differences, and sometimes, (26)_______between them. In other words, it is the difference in the thinking of the people of older and younger generations that creates the (27)_______of understanding between them. The most common example of generation gap is seen in the family between parents and their children. It is not only because of the gap in age but also because of the way parents (28)_________to a particular situation.

Advancement technology has led to the generation gap in this modern world. Children tend to spend most of their time with their digital devices and busy with social media that they do not discuss their problems with their parents. The Internet (29)________solutions to most of the problems that children needn't ask their own parents for help, (30)_________the communication and leading to a generation gap.

Generation gap occurs not only between parents and children but also between teachers and students. Students are likely to enjoy the classes of an open-minded teacher, who shows mutual (31)________to the students. The teachers, who tend to keep their students under unnecessary strict disciplines and practise hard ways to make them obey the orders, are usually disliked by the students. This narrows minded thinking, especially (32)________in the teachers of the older generation, eventually creates a gap between the students and teachers.

Another difference is the use of technology. Young teachers tend to use more digital devices is class for their lessons that has a good (33)_________on the students. Students take more interest and participate actively in the class discussion. An old teacher has (34)_______ frequent use of electronic devices that makes lessons boring, which is not enjoyed by the students and it creates a gap between them.

To (35)________the generation gap, parents or teachers must be close to their children. They should show interest and give time to the children, have open communication, and allow the child to feel free in all the situations.

Question 34......................

Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks.

In a healthy relationship, both partners respect, trust and embrace (1) ____ differences. Both partners are able to communicate (2) ____ their needs and listen to their partner, and work to resolve conflict in a rational and (3) ____ way. But maintaining a healthy relationship (4) ____ for skills many young people are never taught. A lack of these skills, and (5) ____ up in a society that sometimes celebrates violence or in a community that experiences a high (6) ____ of violence, can lead to unhealthy and even violent relationships among youth.

Dating violence (7) ____ psychological or emotional violence, such as controlling behaviours or jealousy; physical violence, such as hitting or punching. More than 20 per cent of all adolescents report having experienced (8) ____ psychological or physical violence from an intimate partner - and underreporting remains a concern.

Adolescents, (9) ____ older adolescents, often have romantic relationships, which are long-term, serious, and intimate. Society has a responsibility to provide young people with the resources, skills, and space (10) ____ to safeguard their physical and emotional well being in these relationships. Youth-serving professionals, educators, and parents can help young people in need access services to (11) ____ dating abuse victimisation. Research also has shown that programmes intended to prevent dating violence can be (12) ____.

(1)....................

Read the following text and circle the best answer:
Welcome to Arolis Chemicals! Thank you for ---139--- the full-time, permanent position of laboratory assistant. We look forward to your arrival on 1 August in the Harris Building. Please report to the front desk and ask for Jack McNolan. He ---140--- you to the Human Resources office. There, you will obtain your employee badge
---141--- all documents necessary to start work. Note that because of its large size, the Leicester campus of Arolis can be difficult to navigate. Studying a campus map will help orient you to the location of the different buildings.----142---. Should you have any questions, please do not hesitate to contact me.

139..................

Choose the word or phrase among A, B, C or D that best fits the blank space in the following passage.

Generation gap refers to the difference in the ways of thinking and perception in the people of two different generations which results in behavioral differences, and sometimes, (26)_______between them. In other words, it is the difference in the thinking of the people of older and younger generations that creates the (27)_______of understanding between them. The most common example of generation gap is seen in the family between parents and their children. It is not only because of the gap in age but also because of the way parents (28)_________to a particular situation.

Advancement technology has led to the generation gap in this modern world. Children tend to spend most of their time with their digital devices and busy with social media that they do not discuss their problems with their parents. The Internet (29)________solutions to most of the problems that children needn't ask their own parents for help, (30)_________the communication and leading to a generation gap.

Generation gap occurs not only between parents and children but also between teachers and students. Students are likely to enjoy the classes of an open-minded teacher, who shows mutual (31)________to the students. The teachers, who tend to keep their students under unnecessary strict disciplines and practise hard ways to make them obey the orders, are usually disliked by the students. This narrows minded thinking, especially (32)________in the teachers of the older generation, eventually creates a gap between the students and teachers.

Another difference is the use of technology. Young teachers tend to use more digital devices is class for their lessons that has a good (33)_________on the students. Students take more interest and participate actively in the class discussion. An old teacher has (34)_______ frequent use of electronic devices that makes lessons boring, which is not enjoyed by the students and it creates a gap between them.

To (35)________the generation gap, parents or teachers must be close to their children. They should show interest and give time to the children, have open communication, and allow the child to feel free in all the situations.

Question 29.....................

Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks.

In a healthy relationship, both partners respect, trust and embrace (1) ____ differences. Both partners are able to communicate (2) ____ their needs and listen to their partner, and work to resolve conflict in a rational and (3) ____ way. But maintaining a healthy relationship (4) ____ for skills many young people are never taught. A lack of these skills, and (5) ____ up in a society that sometimes celebrates violence or in a community that experiences a high (6) ____ of violence, can lead to unhealthy and even violent relationships among youth.

Dating violence (7) ____ psychological or emotional violence, such as controlling behaviours or jealousy; physical violence, such as hitting or punching. More than 20 per cent of all adolescents report having experienced (8) ____ psychological or physical violence from an intimate partner - and underreporting remains a concern.

Adolescents, (9) ____ older adolescents, often have romantic relationships, which are long-term, serious, and intimate. Society has a responsibility to provide young people with the resources, skills, and space (10) ____ to safeguard their physical and emotional well being in these relationships. Youth-serving professionals, educators, and parents can help young people in need access services to (11) ____ dating abuse victimisation. Research also has shown that programmes intended to prevent dating violence can be (12) ____.

(4)....................

Read the text carefully, then choose the correct answers.

A YEAR WITH OVERSEAS VOLUNTEERS

I was with Overseas Volunteers (OV) for a year after leaving university, and I was sent to an isolated village in Chad, about 500 km from the capital N'Djamena. Coming from' a rich country, I got quite a shock as conditions were much harder than I had expected. But after a few days I soon got used to living there. The people were always very friendly and helpful, and soon I began to appreciate how beautiful the countryside was.

One of my jobs was to supply the village with water. The well was a long walk away. And the women used to spend a long time every day carrying heavy pots backwards and forwards. So I contacted organization and arranged to have some pipes delivered. We built a simple pipeline and a pump, and it worked first time. It wasn't perfect - there were a few leaks, but it made a great difference to the villagers, who had never had running water before. And not only did we have running water, but in the evenings it was hot, because the pipe had been lying in the sun all day. All in all, I think my time with OV was a good experience. Although it was not well-paid, it was well worth doing, and I would recommend it to anyone who was considering working for a charity.

How did the author feel when he arrived in the village?

Read and choose the correct answer to complete the letter.

"Dear Diana,

My parents and I are (1)…… to know that you passed the end-of-term examination. Congratulations! I think that with your excellence, your (2)……… to become a good doctor will come true.

My younger sister was really (3)………. to receive a hair curling machine from you on her birthday and she asked me to say “thank you” to you. However, she doesn't know the (4)…….. to use that machine. It seems (5)……. for her to use it.

I was relieved that your mother had recovered after a serious surgery. It was (6)………. to believe that she had to suffer from a severe disease for a long period of time. Please give her my love.

I am excited that you're going to visit my beautiful city. I want to show you my (7)……… to take you to famous places.

We're looking forward to seeing you. It will be (8)………. for me to welcome you to my house.

Write me soon and confirm your arrival date and time.

Love,

Sarah"

1. My parents and I are (1)…… to know that you passed the end-of-term examination.

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks.

Nowadays people are more aware that wildlife all over the world is in (1)________. Many species of animals are threatened, and could easily become (2)________ if we do not make an effort to protect them. In some cases, animals are hunted for their fur or for other valuable parts of their bodies. Some birds, such as parrots, are caught (3)________and sold as pets. For many animals and birds the problem is that their habitat - the place where they live - is disappearing. More land is used for farms, for houses or industry, and there are fewer open spaces than there once were. Farmers use powerful chemicals to help them to grow better crops, but these chemicals pollute the environment and (4)________ wildlife. The most successful animals on earth - human beings - will soon be the only ones (5)________, unless we can solve this problem.

(4)................

Political and family values within society have impacted upon the modern family structure. Traditionally, it has been the man’s role to be the breadwinner for the family- providing the funds to pay for food and shelter. However, due to the many new and unique responsibilities placed upon families, in numerous cases both men and women- fathers and mothers- have had to enter the workforce. Generally, the reasons for both being involved in the workforce revolve around the need to add to the family’s current financial base. To a lesser extent, the need to interact with “adults” in a stimulating work environment is another popular reason. Whatever their reasons, for many families, the decision for father and mother to go out of home and join the labor force has led to a number of side effects within the home which, in turn, impact upon their performance as employees. Many researchers agree that attitudes towards work are carried over into family life. This spillover can be positive or negative. Positive spillover refers to the spread of satisfaction and positive stimulation at work resulting in high levels of energy and satisfaction at home. If the amount of research is to be taken as an indication, it would seem that positive spillover is not a dominant occurrence in the workplace with most research focusing on the effects of negative spillover. Often pointing out the incompatible nature of work and family life, the research focuses on problems and conflict at work which has the effect of draining and preoccupying the individual, making it difficult for him or her to participate fully in family life.
Social scientists have devised a number of theories in an attempt to explain the work-family dynamic. Compensation theory is one which has been widely used. It assumes that the relationship between work and family is negative by pointing out that high involvement in one sphere- invariably the work sphere- leads to low involvement in the other. As an individual advances within a career, demands typically fluctuate from moderate to more demanding and if the advancing worker has younger children, this shift in work responsibilities will usually manifest itself in the form of less time spent with the family. Researchers subscribing to this theory point out that the drain on family time is significantly related to work-family conflict with an escalation in conflict, as the number of families increase.

The following are the reasons why the fathers and mothers both go to work EXCEPT_______

According to airline industry statistics, almost 90 percent of airline accidents are survivable or partially survivable. But passengers can increase their chances of survival by learning and following certain tips. Experts say that you should read and listen to safety instructions before take-off and ask questions if you have uncertainties. You should fasten your seat belt low on your hips and as tightly as possible. Of course, you should also know how the release mechanism of your belt operates. During take-off and landings you are advised to keep your feet flat on the floor.
Before take-off you should locate the nearest exit and an alternative exit and count the rows of seat between you and the exits so that you can find them in the dark if necessary. In the event that you are forewarned of the possible accident, you should put your hands on your ankles and keep your head down until the plane come to complete stop. If smoke is present in the cabin, you should keep your head low and cover your face with napkins, towels, or clothing. If possible, wet these for added protection against smoke inhalation. To evacuate as quickly as possible, follow crew command and do not take personal belongings with you. Do not jump on escape slides before they are fully inflated and when you jump, do so with your arms and legs extended in front of you. When you get to the ground, you should move away from the plane as quickly as possible, and never smoke near the wreckage.

Travellers are urged by experts to read and listen to safety instructions........

Sleep is a natural process, and although a lot have been written about the subject, it is still surrounded by mystery. It is used by some as an escape from the world, and regarded by others as an irritating waste of time: some people get by on very little, others claim they cannot exist without at least ten hours, but nobody can do without sleep completely.
Our night’s sleep does not just consist of a steady phase of gradually deepening sleep. It alternates between two stages: Non-dreaming or ordinary sleep, and REM (rapid eye movement) or dreaming sleep. As soon as we fall asleep, we go straight into non-dreaming sleep for an hour or so, then into REM sleep for about 15 minutes, then back into non-dreaming sleep. It alternates in this way for the rest of the night, with non-dreaming sleep tending to last longer at the beginning of the night. Non-dreaming sleep occupies three-quarters of our night’s sleep, about a quarter of it deep and the rest fairly light. 
It is widely believed that sleep repairs the body and makes good the damage caused by being awake. However, its main function is to refresh the brain. Experts believe that probably only about two-thirds of our sleep is necessary for repairing and refreshing the brain, with the most valuable sleep coming in the first few hours of the non-dreaming period, the last few hours of sleep are not so essential. The brain can manage quite well with reduced sleep as long as it is uninterrupted sleep. 
The quality of sleep is important. A study conducted in the USA looked at short sleepers, who slept for 5.5 hours on average, and long sleepers, who had 8.5 hours or more. It is discovered after a variety of tests that the long sleepers were poor sleepers, had twice as much REM sleep as the short sleepers, appeared to sleep longer to make up for poor sleep, and did not wake up in the morning refreshed. Similarly, people who sleep deeply do not necessarily get a better quality of sleep than shallow sleepers. Deep sleepers can feel tired the following day, so six hours of good sleep is worth more than eight hours of troubled sleep.

The study in the USA suggested that ______.

There is usually one important subject missing from most school timetables. Very few students are .....(1)........ how to organize their learning, and how to make the best use of their time. Let’s take some simple examples. Do you know how to .....(2)... up words in a dictionary, and do you understand all the information the dictionary contains? Can you ...(3)... notes quickly, and can you understand them afterwards? For some reason, many schools give learners no help with these matters. Teachers ask students to ...(4)... pages from books, or tell them to write ten pages, but don't explain how to do it Learning by heart can be useful, but it is important to have a genuine understanding of a subject. You can ...(5)... a lot of time memorizing books, without understanding anything about the subject.

(3)............................