— Why did he come back?— It is _____ he forgot to take his umbrella with him.

试卷相关题目

• 1We hadn't waited for long _____ the bus pulled up at the bus stop.

  A.until

  B.since

  C.before

  D.once

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• 2______ you have got a chance, you should make full use of it.

  A.Now that

  B.After

  C.Although

  D.As soon as

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• 3Tommy had had a three-mile drive north _____ he could turn and head back south.

  A.while

  B.as

  C.before

  D.after

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• 4_____ you understand the rule, you'll find English easy to learn.

  A.As

  B.While

  C.Once

  D.Whether

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• 5Lucy is going to have difficulty finding a good job _____ she graduates from a key university.

  A.as if

  B.even if

  C.so that

  D.as usual

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• 6______ you've got a chance, you might as well make full use it.

  A.Now that

  B.So

  C.Although

  D.As soon as

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• 7Scientists overcame (克服) much difficulty they had _____ that technological problem _____ they finally could send the manned (载人的) spaceship up into space.

  A.to solve; until

  B.solving; before

  C.to solve; before

  D.solving; until

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• 8_____ the plan has been worked out, it's time for us to get down to carrying it out.

  A.For

  B.With

  C.Now that

  D.Even though

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• 9I don't know _____ he gets along well with his lessons.

  A.how

  B.that

  C.whether

  D.what

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• 10Americans and Canadians can understand each other ______ they don't speak the same kind of English.

  A.now that

  B.even if

  C.as if

  D.only if

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