I was out of town at the time，so I don’t know exactly how it .A. was happeningB. happenedC

发布时间：2020-08-17 10:08:46

I was out of town at the time，so I don’t know exactly how it     .
A. was happening
B. happened
C. happens
D. has happened

网友回答

A. was happening
(答案→)B. happened
C. happens
D. has happened
解析：
由前半句可知“事情”发生在过去，而不强调对现在的影响，故用一般过去时。
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