题目

—Do you know the man ______ is standing at the door? —Yes, I do. He's a friend of_____. A. when; I                               B. who; mine C. that; me                              D. which; my 答案：【答案】B 【解析】考查定语从句引导词以及名词性物主代词的用法。定语从句的先行词the man是“人，在定语从句中充当的是主语，因此用关系代词who或that引导来引导，我的一个朋友，a friend of mine.故选B.

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