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    科目： 来源：不详 题型：单选题

    As it turned out to be a small house party, we _______ so formally.
    A．needn’t dress upB．didn’t have to dress up
    C．might not have dressed upD．needn’t have dressed up

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    科目： 来源：不详 题型：单选题

    ----Will Mr. Smith join us in the party ?
    ----He would, but he _____not . He sometimes likes to stay alone.
    A must          B can        C need      D may

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    科目： 来源：不详 题型：单选题

    .We were all waiting for you .You _____for the seaside by yourself without leaving a message.
    A．mustn’t leaveB．shouldn’t have leftC．couldn’t have leftD．needn’t leave

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    科目： 来源：不详 题型：单选题

    She is late. What _____have happened to her?
    A should      B must   C can    D would

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    科目： 来源：不详 题型：单选题

    ----She must have gone back to the valley.
    ----No, she _____. The entrance to it was nowhere to be found.
    A mustn’t     B needn’t   C couldn’t   D hadn’t

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    科目： 来源：不详 题型：单选题

    A．may not beB．won’t beC．couldn’t beD．mustn’t be

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    科目： 来源：不详 题型：单选题

    “Do you think he is lazy?” “I _________ so once, but I don’t now.”
    A．may have thoughtB．can have thoughtC．may thinkD．might think

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    科目： 来源：不详 题型：单选题

    You _________ be right, but I don’t think you are.
    A．canB．couldC．mustD．should

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    科目： 来源：不详 题型：单选题

    Mike is often absent from class.” “Tell him he _________ answer for it if he goes on behaving like that.”
    A．shallB．willC．wouldD．can

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    科目： 来源：不详 题型：单选题

    --- I hear you have written a novel.
    --- Yes, the book ______ come out in a month or so.
    A．can B．mustC．shouldD．would

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