◎ 题干
The engineer spoke highly of the government's efforts, _____ he owed his safe return from Libya.

[     ]

A. through which
B. to which
C. with whom
D. for 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 spoke highly of the government's efforts, _____he owed his safe return from Libya. [ ]A. through which B. to which C. with whom D. for whom …”主要考查了你对  【关系代词】【介词和介词短语】【非限制性定语从句】  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。