They are still discussing whether I_____to the meeting yesterday,which I think was not necessary at

题目

They are still discussing whether I_____to the meeting yesterday,which I think was not necessary at all.A.could come B.should have come C.should come D.must have come 选B.为什么?C为什么不行?

答案

因为是现在讨论过去的事,开会是昨天的事,已经过去,所以用should+ have+ 过去分词
而should+ 动词原形,表示现在或者将来“应该做某事”
请在客户端右上角评价点“满意”即可,