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The sum of all chemical reactions in organism’s living cells are called its metabolism.

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Fertilizers are used primarily enrich the soil and increasing yield.

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Students in the United States often support themselves by babysit, working restaurants, or they drive taxi cabs

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How much times did Rick and Jennifer have to do the experiment before they obtained results they had been expecting?

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The Americans annually import more than $3 billion worthy of Italian clothe, jewelry, shoes.

Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions.

One advantage of living in a/an ____ is to strengthen relationship between young children and adults.

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Chicago’s Sears Tower, now the tallest building in the world, rises 1,522 feet from ground to the top of it antenna.

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In its pure State, aluminum is a weak metal, but when combined elements such as copper or magnesium, it is formed alloys great strength

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We really enjoyed the children’s interested and excited play last Saturday.

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Runner Wilma Rudolf win three gold medals the 1960 Olympics, and she set the world record for the 100 – meter dash 1961

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Although she is 103 but, she still does a lot of work in the flat.

Choose the correct answer to complete the sentence. " Ba reviewed the lessons carefully. He could finish the test very _______"

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Since a computer was invented, work of accountants have been simplified.

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What caused  explosion in the factory it is still unknown

Choose the correct answer to complete the sentence. "Some schools encourage _____ and free thinking so children can study art, music and gardening as well as science and history. "

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When he arrived at furniture shop, they had been sold the table he wanted.

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We must start a …………. for illiteracy eradication immediately.

I did not have enough lexical knowledge to________  that article from Vietnamese into English.

Choose the answer to complete each unfinished sentence, substitutes the underlined part.

It is Phong’s sense of responsibility    _____________   makes him successful in his life.

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Needles are simple – looking tools, but they are so relatively difficult to make

Choose the correct answer to complete the sentence. "Don't make me feel guilty _______ I couldn't do anything about it."