◎ 题干
— He can't have finished his homework last night, ______ he? 
— No. You see, he is busy doing it now.
[      ]
A. has
B. may
C. can
D. did
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“—He can't have finished his homework last night, ______ he?— No. You see, he is busy doing it now. [ ]A. has B. may C. can D. did …”主要考查了你对  【反意疑问句】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。