24. I was spending my holidays at the time, so I have no idea how itA. was happeningB. hap

发布时间：2020-08-16 06:20:29


24. I was spending my holidays at the time, so I have no idea 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
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