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1.If you have finished most of the work,you ______ start working so early tomorrow.(  )
A.can'tB.mustn'tC.couldn'tD.needn't

分析 如果你已经完成了大部分工作,明天你就没有必要开始工作的那么早了.

解答 答案:D.
结合选项可知本题考查情态动词,首先明确选项中每个单词的意思:A:不可能/不会;B:不可以(表禁止);C:不能(can't的过去式);D:没必要; 根据设空处前面的If you have finished most of the work,结合题干推测句意是"如果你已经完成了大部分工作,明天你就没有必要出去工作的那么早了.",所以needn't 符合句意,表示没必要.故选D.

点评 本题考查了情态动词的用法.解答时首先根据题干明确句意,理解所给选项中每个情态动词的意思并熟练掌握它们的用法,便可作出正确选择.

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