All plants need air_____ they need water.

试卷相关题目

• 1 When he was only thirty years old, he had already experienced ______ most people only experience when they are much older.

  A.what

  B.which

  C.who

  D.When

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• 2.Why did you take a taxi____you could come here by bus?

  A.while

  B.unless

  C.when

  D.until

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• 3We didn't go home _____ we finished the work.

  A.since

  B.until

  C.because

  D.though

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• 4I hurried _____ I wouldn't be late for class.

  A.since

  B.so that

  C.as if

  D.unless

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• 5_____ hard she tries, she can hardly avoid making mistakes in her homework.

  A.Much

  B.However

  C.As

  D.Although

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• 6He must have passed this way, _____here are his footprints.

  A.since

  B.because of

  C.now that

  D.for

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• 7_____ weather permits, we'll have an outing.

  A.For

  B.Though

  C.While

  D.If

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• 8As the visiting prime minister puts it, China's influence in the world will continue to strengthen______ its economy grows.

  A.although

  B.until

  C.as

  D.Before

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• 9. You can depend on ________ promise he makes.

  A.anything that

  B.which

  C.whatever

  D.whose

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• 10They did not stop fighting_____ there was no enemy left.

  A.until

  B.after

  C.when

  D.since

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