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1.You       return the book now.And you can keep it till next week.(  )
A.needn'tB.can'tC.mustn'tD.won't

分析 你现在不必还这本书.你可以把它保存到下一周.

解答 答案是A.本题考查情态动词辨析;needn't不必;can't不可能;mustn't禁止;won't不会;根据下文"你可以把它保存到下一周"推断你现在"不必"还书,所以答案选择A.

点评 要在正确理解情态动词的基本含义的基础上,整体理解语境中的情感态度,做出合理的判断.

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