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

发布时间：2020-08-16 15:12:39

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

网友回答

A. has happened
(答案→)B. happened
C. happens
D. was happening
解析：考查时态。句意：那时候我出城了，因此我确实不知道它是怎么发生的。可以从句描述的是我出城使发生的动作，故用过去时态。选B。
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