—— Do you still remember the day when we went to the Great W

—— Do you still remember the day when we went to the Great Wall?
—— I can’t remember it well, but______sometime last autumn?
A.might it be B.could it have been C.could it be D.must it have been
cheeme 1年前 已收到1个回答 举报

xijiapozh 幼苗

共回答了25个问题采纳率:88% 举报

B

could have done表示对过去发生情况的可能性推测。

1年前

5
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