问题
选择题
— 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
答案
答案：D
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— 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：D