– May I go swimming in the lake, Mum? – No, you _________ . It's too dangerous.

试卷相关题目

• 1He ______ without saying good-bye to them, for he always has good manners.

  A.mustn't have left

  B.may not have left

  C.shouldn't have left

  D.can't have left

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• 2—You were driving at 100 km an hour, sir. —But officer, I ________. My car can't go more than 80.

  A.may not have to

  B.couldn't have been

  C.wouldn't like to

  D.needn't to be

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• 3Persons under 16 _________ not be employed in our country．

  A.shall

  B.can

  C.may

  D.will

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• 4 -- I was trying to repair that stupid machine, but I failed. -- Well, you_______.

  A.needn't do that

  B.needn't have done

  C.needn't have

  D.needn't

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• 5Mr .Smith ______ the first bus, otherwise he should have arrived  here  by now.

  A.should have missed

  B.must have caught

  C.must have missed

  D.might miss

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• 6___________, he would have been fired.

  A.Had he lied to the boss

  B.Did he lie to the boss

  C.If he has lied to the boss

  D.If he lies to the boss

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• 7We _______ finish it ahead of time, though it was such a tough task.

  A.could

  B.would

  C.were able to

  D.ought to

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• 8— Hello, can I speak to Frank? — I'm sorry, he's just left home. He ______ reach his office by 9:30.

  A.can

  B.need

  C.shall

  D.should

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• 9They ______ the train to Beijing．Otherwise, they would have returned home．

  A.need have caught

  B.must have caught

  C.must catch

  D.may catch

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• 10The World Health Organization warned that Asian countries __________ attentive to bird flu since Asia ___________ got rid of the disease completely.

  A.should keep; has

  B.must remain; has not

  C.ought to stay; has been

  D.shall be; has not been

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