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    7．Must I return the book today？No，you __________（　　）
    A．mustn'tB．can'tC．needn'tD．may not

    分析 --我必须今天还书吗？
    --不，你没有必要．

    解答 答案：C
    解析：A：禁止；B：不能；C：不需要；没必要；D：或许不．根据句意"不，你没有必要"及所给选项分析可知本题答案为C选项，其余选项均不符合题意．

    点评 本题考查情态动词，做此类题目时一定要清楚各个选项的含义及用法，再结合句意确定最终的答案．

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