They went on well at first but eventually everything they had worried about happenedA. w

发布时间：2020-08-17 11:27:22

They went on well at first but eventually everything      they had worried about happened．
A. which
B. what
C. that
D. when

网友回答

A. which
B. what
(答案→)C. that
D. when
解析：考查定语从句。当先行词为代词时关系代词用that而不能用which。
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