选A. 表猜测,因为已发生,所以用may/might +have done
我不知道,她或许来过.（我自己也不是很有把握）
—Did Mary come to the party?—I don't know.She__while I was out.A.might have come B.might come
—Did Mary come to the party?—I don't know.She__while I was out.A.might have come B.might come
为什么是A不是B
为什么是A不是B
英语人气：740 ℃时间：2019-08-20 09:29:24
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