问题
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
B: must play
C: can't have played
D: can't play
正确答案是：
同类题型
We’ll have a picnic in the park this Sunday ________ it rains or it’s very cold
the old man this afternoon If you , make sure you wear sunscreens to protect your skin.
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n the twoparts of the concert is an interval, ___the audience can buy ice-cream.