摘要：12．--- 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
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— He can't have finished his homework last night, ______ he?
— No. You see, he is busy doing it now.
— No. You see, he is busy doing it now.
[ ]
A. has
B. may
C. can
D. did
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B. may
C. can
D. did