题目内容

I can’t find the recorder in the room. It ________ by someone.
A．may takeB．may have been taken away
C．must have taken awayD．needn’t have been taken away
B
情态动词考查题。  must have done 一定做了某事， 在房间里我找不到录音机肯定有人拿走了。 选B
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