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 如果你已經(jīng)完成了大部分工作，明天你就沒有必要開始工作的那么早了．

解答 答案：D．
結(jié)合選項可知本題考查情態(tài)動詞，首先明確選項中每個單詞的意思：A：不可能/不會；B：不可以（表禁止）；C：不能（can't的過去式）；D：沒必要； 根據(jù)設(shè)空處前面的If you have finished most of the work，結(jié)合題干推測句意是"如果你已經(jīng)完成了大部分工作，明天你就沒有必要出去工作的那么早了．"，所以needn't 符合句意，表示沒必要．故選D．

點評 本題考查了情態(tài)動詞的用法．解答時首先根據(jù)題干明確句意，理解所給選項中每個情態(tài)動詞的意思并熟練掌握它們的用法，便可作出正確選擇．

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