题目内容
The accident caused by a dog running across the road, but we don’t know for sure.
A.could have been B.must have been
C.might have D.should have
【答案】
A
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题目内容
The accident caused by a dog running across the road, but we don’t know for sure.
A.could have been B.must have been
C.might have D.should have
A