问题
选择题
My book was here a second ago but now it's missing. Someone ________ a joke on me.[ ]
A. must be playing
B. must play
C. can't have played
D. can't play
答案
答案：A
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My book was here a second ago but now it's missing. Someone ________ a joke on me.[ ]
A. must be playing
B. must play
C. can't have played
D. can't play
答案：A