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We met and have become good friends since then. A.by mistake B.by accident C.by

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We met and have become good friends since then. A.by mistake B.by accident C.by

20.We met _____ and have become good friends since then.

A.by mistake

B.by accident

C.by ourselves

D.by the way

 

试题答案

【答案】

B

【解析】略