I （）Mary in the street yesterday,we （）each other since I lef

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I （）Mary in the street yesterday,we （）each other since I left school.【答后给分】.
A.met；didn’t see.B.had met；hadn’t seen.C.met；hadn’t seen.回答并附上原因.

C
像有yesterday last week 9:00 last Monday这种具体指出的过去的时间的句子
用过去时
而有since balabalabala~或past 3 years之类的过去一段时间的句子
用完成时
LS
我认为C还是对的
如果过去的动作一直持续到现在那应该用现在完成时就是haven't seen
可是我和Mary昨天已经见过了
not see each other这个动作到昨天已经截止了
所以用过去完成时是没错的

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