If there ______ no water or air on the earth, all living things would die.

试卷相关题目

• 1How _____ you say that you really understand the whole story if you have covered only part of the article?

  A.can

  B.must

  C.need

  D.may

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• 2 ---- Why didn't you pick up the MP4? ---- I ______ it, but I didn't carry that much money.

  A.could buy

  B.should buy

  C.must have bought

  D.could have bough

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• 3 — Thank you for reminding me of the time, or I______late for the flight yesterday. — Don't mention it.

  A.should be

  B.would be

  C.will have been

  D.would have been

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• 4 She _______ the hospital so soon, for she has not yet recovered.

  A.wouldn't have left

  B.shouldn't have left

  C.mustn't have left

  D.hadn't had left

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• 5--- What is the matter with the pen? --- The ink _______come out.

  A.isn't

  B.didn't

  C.don't

  D.won't

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• 6It has been announced that candidates ________ remain in their seats until all the papers have been collected.

  A.can

  B.will

  C.may

  D.shall

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• 7—Daddy, can you buy me a new MP3 when you go to Beijing? —You ______ get one if you are admitted to a key middle school.

  A.could

  B.shall

  C.may

  D.can

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• 8 ----- Oh, my goodness! My laptop must have got stolen． ----- But where _____ a thief have entered the house with all the doors and windows still locked?

  A.should

  B.could

  C.dare

  D.did

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• 9----- Is that Mr．Smith over there? ----- No, it _____ be him --- I am sure he is much taller.

  A.must not

  B.may not

  C.can't

  D.won't

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• 10What a pity! I ______ in Hainan two more days, but something urgent needed to be dealt with back home.

  A.must have stayed

  B.needn't have stayed

  C.may have stayed

  D.could have stayed

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