问题
选择题
He was very rude to the customs officer, ____ of course made things even worse.
A．who
B．whom
C．what
D．which
答案
答案：D
考查定语从句，句中which引导的非限定性定语从句，指代的前面的一件事。故选D。
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He was very rude to the customs officer, ____ of course made things even worse.
A．who
B．whom
C．what
D．which
答案：D
考查定语从句，句中which引导的非限定性定语从句，指代的前面的一件事。故选D。