The whole Chinese people will never forget the day, May 12th, 2008, the strong earthquake

发布时间：2020-08-16 15:08:11

The whole Chinese people will never forget the day, May 12th, 2008,      the strong earthquake happened in Wenchuan.
A. on which
B. on that
C. in which
D. from which

网友回答

(答案→)A. on which
B. on that
C. in which
D. from which
解析：考查定语从句的用法。on which 在此表时间，相当于when。
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