选A ,对过去的推测,所以用could
We did not see him at the meeting,he could not have attended it.
我们在会议上没见到他,他不可能出席了会议.
we didnot see him at the meeting.he () it.A.couldnot have attended B.neednot have attended
we didnot see him at the meeting.he () it.A.couldnot have attended B.neednot have attended
C.shouldnot have attended D.must have attended
C.shouldnot have attended D.must have attended
英语人气:951 ℃时间:2020-02-05 08:40:36
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