The letter is from my sister, is working in Beijing. A. which B. that C. whom D. who

发布时间：2020-08-17 12:19:38

The letter is from my sister,     is working in Beijing.
A. which
B. that
C. whom
D. who

网友回答

A. which
B. that
C. whom
(答案→)D. who
解析：who引导非限制性定语从句,who作从句的主语.
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