He was impolite to the Custom Officer, , of course, made things even worse.A. whoB. thatC

发布时间：2020-08-17 13:17:03

He was impolite to the Custom Officer,     , of course, made things even worse.
A. who
B. that
C. what
D. which

网友回答

A. who
B. that
C. what
D. which
解析：which引导非限制性定语从句,指代主句的整个情况。  
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