選A ,對過去的推測,所以用could
We did not see him at the meeting,he could not have attended it.
我們在會議上沒見到他,他不可能出席了會議.
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
英語人氣：535 ℃時間：2020-02-05 08:40:36
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