The ozone layer must be protected because it shields the Earth from excessive raviolet radiations .

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• I only noticed we were running lowly on petrol after had passed the last filling station.

• Hoover Dam in Nevada is a multi purpose structure that provides flood control, hydroelectric powerful , and drinking and irrigate water.

• Life expectancy has increased a great deal in of  modern medicine and technology.

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• With an annual income of fifty thousand dollars a year, he can afford to give luxurious lives

• A mainframe computer is large and usually used to operate a network of another computers

• What a lovely baby! He certainly …………. his father, doesn’t he? 

• Either humans and animals learn by experience, and what is learned influences the plannin and carrying out of simple actions.

• I did not realize that I had left my umbrella on the bus when started to rain.

• Marta (being chosen as the most outstanding student of her campus made parents very happy.

• I really hope my sister will apply for that new job; she will be good with it

• Recently in the automobile industry, multinational companies have developed the point where such few cars can be described as having been made entirely one country

• Most modern barns are both insulated, ventila and equipped with electricity 

• Muscles are essentially made up by elastic fibers that end flexibility the body.

• While they were away at the beach, they allowed their neighbors use their barbeque grill.

• Visitors may realize that even though can’t make their homes in Da Lat City, they can take away (with them memor of their beauty .

• Our civilization is so commonplace to us that rarely we stop to think about its complexity.

• Since fireworks are dangerous, many countries have laws preventing busin to sell them.

• His father plays an important part ...................educating him. 

• 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: 

  The major stone sections of the Citadel of the Ho Dynasty remain intact thanks to the unique construction techniques.

• Education is desperately needed in many countries where a low percentage of the population are illiterate.