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    科目： 来源：不详 题型：单选题

    It ________be the vocabulary that caused you the problem in the exercise because you know a lot of words.                                                  (2013·安徽，34)
    A．may B．couldn’t
    C．shouldD．needn’t

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    科目： 来源：不详 题型：单选题

    —Why are your eyes so red？You________have slept well last night.
    —Yeah，I stayed up late writing a report.                          (2013·四川，5)
    A．can’tB．mustn’t
    C．needn’t D．won’t

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    科目： 来源：不详 题型：单选题

    Since nobody gave him any help，he ________ have done the research on his own.
    (2013·大纲全国，26)
    A．canB．must
    C．wouldD．need

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    科目： 来源：不详 题型：单选题

    —You needn’t take an umbrella.It isn’t going to rain.
    —Well，I don’t know.It________do.                             (2013·北京，35)
    A．mightB．need
    C．would D．should

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    科目： 来源：不详 题型：单选题

    Harry is feeling uncomfortable.He________too much at the party last night.(2013·辽宁，31)
    A．could drinkB．should drink
    C．would have drunkD．must have drunk

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    科目： 来源：不详 题型：单选题

    No one________ be more generous；he has a heart of gold.         (2013·天津，9)
    A．couldB．must
    C．dareD．need

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    科目： 来源：不详 题型：单选题

    He________sleep，although he tried to，when he got on such a hunt for an idea until he had caught it.                                                     (2013·湖南，32)
    A．wouldn’t B．shouldn’t
    C．couldn’tD．mustn’t

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    科目： 来源：不详 题型：单选题

    When I was a child，I ________ watch TV whenever I wanted to.        (2013·江西，29)
    A．shouldB．could
    C．mustD．need

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    科目： 来源：不详 题型：单选题

    I ________ use a clock to wake me up because at six o’clock each morning the train comes by my house.                                                    (2012·新课标全国，30)
    A．couldn’tB．mustn’t
    C．shouldn’tD．needn’t

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    科目： 来源：不详 题型：单选题

    —God！My cell phone is missing.
    —You ________ have left it at home.I heard you telephone our daughter in the bathroom.
    A．shall B．must
    C．wouldD．could

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