问题
选择题
Her son was accused of cheating by the police, ________ made it difficult for her to go to sleep.
A．what
B．as
C．which
D．where
答案
答案：C
选C 考查定语从句。句意：她的儿子被警察指控犯了诈骗罪，这使她睡不着觉。此处which引导非限制性定语从句，指代前面整个内容。
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