Humus is formed during soil microorganisms decompose animal and plant material into usable elements by plants.

Choose the correct answer to complete the sentence. "______ he acts like an innocent man, the evidence shows the contradiction."

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She has been talking to somebody ............. the telephone for two hours. 

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If you understand a matter thoroughly, that means you understand it ____.

Watching videos is becoming a popular form of .......................

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Many people like the slow_______of  life in the countryside.

She would call you immediately if she _____ help 

Read and choose the appropriate option: 
WHY DO ANIMALS GO EXTINCT? Different kinds of animals have appeared and disappeared throughout Earth’s history. Some animals go extinct because the climate (41)_______ they live changes. The climate may become wetter or drier. It may become warmer or cooler. If the animals cannot change, or adapt, to the new climate, they die. Some animals go extinct because thay cannot (42) _______ with other animals for food. Some animals go extinct because they are killed by enemies. New kinds of animals are always evolving. Evolving means that the animals are changing (43) _______ from generation to generation. Small differences between parents, children, and grandchildren slowly add up over many, many generations. Eventually, a different kind of animal evolves. [evolve: tiến hóa] Sometimes many of the animals on Earth go extinct at the (44) _______ time. Scientists call this a mass extinction. Scientists think there (45) _______ at least five mass extinctions in Earth’s history. The last mass extinction happened about 65 million years ago. This mass extinction killed off the dinosaurs.
(42)..........................

In his absence, I would like to thank all concerned on my brother’s ....................

 __________ the cold weather, my family still managed to go for a pinic.

Forest dwellers had always hunted the local _______ but their needs had been small.

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. 
The first thing that is included in the "living together” (23) ______ is the expected good relations with your family. This also involves sharing equally the housework. Lots of people think that everyone should share the housework (24) ________, but in many homes parents do most of it. To certain minds, many families can't share the housework whereas they should try it. In fact, sharing the housework equally is not very possible because of the families' timetable. So, it is somehow believed that children and parents must do things together. For this they can establish a housework planning.
(25)_________, housework's contributions of the teenager make him more responsible. He will think that he has an important role in his family. According to researchers, teenagers should share the housework because (26) ______ will help them when they have to establish their own family in the future. Too many teenagers and young adults leave home without knowing how to cook or clean, but if parents delegate basic housework to teens as they are old enough to do it, they won't be destabilized by doing the housework in their new grown-up life.
It can be (27) ________ concluded that many parents don't really prepare their children for future, because they don't stimulate them to learn how to run a house. If parents get them responsible, teens will be more responsible and that will improve family's life.

According to researchers, teenagers should share the housework because (26) ______ will help them when they have to establish their own family in the future

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Kien Thuc Ngay Nay is one of the ............... popular magazines.

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I don’t mind .................. if you’re tired. 

Mark the letter A, B, C or D to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions:

She is a very generous old woman. She has given most of her wealth to a charity organization.

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined bold word(s) in each of the following questions: 

There was a long period without rain in the countryside last year so the harvest was poor.

Choose the correct answer to complete the sentence. "The computer computers the positions and colors for the figures in the picture, and sends this information to the recorder, _____ captures it on film"

Mark the letter A, B, C, or D on your answer sheet to indicate the word or phrase that is CLOSEST in meaning to the underlined part in each of the following questions.

I couldn't see what she was doing. It was so dark down there.

Nobody phoned while I was out, ___________?

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Doctors advise people who are deficient __________ vitamin C to eat more fruit and vegetables.

Choose the best answer to complete the following sentences.

Species become extinct or endangered for ____ number of reasons, but ____ primary cause is the destruction of habitat by human activities.