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英语
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I'm very glad to see you.I ( ) you had come already.
A.don't know B.haven't know C.didn't know D.hadn't know
选什么?
为什么?
人气：387 ℃ 时间：2019-10-26 04:12:30
解答
c
had come过去完成时 前面就该用一般过去时
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