题目内容：

John _____ the chess club for three month 是选A has joined 还是B has been a member of ?
为什么,求详细解析、

优质解答

B 因为句中的时间是三个月,所以需要填能够持续的谓语,A是“参加”,是瞬间动作,不能持续.B是成为成员,可以持续,正确.

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