She doesn't answer the doorbell．She ________ be asleep．

试卷相关题目

• 1If Harry did not attend the conference last night, he ________ too much work to do．

  A.had to have had

  B.had had

  C.must have had

  D.must have

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• 2The policeman told the pupils, “You ________ play football in the street．”

  A.can't

  B.needn't

  C.mustn't

  D.shouldn't

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• 3He didn't pass the examination．As a good student, he ________．

  A.should have failed

  B.must have failed

  C.shouldn't have failed

  D.mustn't have failed

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• 4My cell phone is not in my bag．Where ________ I have put it?

  A.can

  B.might

  C.must

  D.would

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• 5It ________ be him．It's his turn tomorrow．

  A.mustn't

  B.won't

  C.can't

  D.needn't

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• 6Peter, if you don't like to swim, you ________ as well watch TV at home．

  A.should

  B.may

  C.must

  D.would

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• 7The public transportation is very convenient(方便的)in that country, so there ________ be any difficulty in traveling around．

  A.must

  B.wouldn't

  C.shouldn't

  D.needn't

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• 8Look what you have done!You ________ be more careful．

  A.may

  B.should

  C.would

  D.had to

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• 9When the Challenger exploded in 1986, people were reminded just how dangerous space travel ________ be．

  A.must

  B.shall

  C.will

  D.can

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• 10Many poorer nations are using up natural resources at a fast rate．________ people be blamed for destroying lots of rainforest if it means a better life for them?

  A.Would

  B.Need

  C.Could

  D.Should

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