◎ 题干
The engineer _____ my father works is about 50 years old.

A. to whom
B. on whom
C. with which
D. with whom
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“The engineer _____ my father works is about 50 years old. [ ]A. to whom B. on whom C. with which D. with whom …”主要考查了你对  【关系代词】【介词和介词短语】【限制性定语从句】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。