A-A+
I was out of town at the time so I do not kno
问题详情
I was out of town at the time, so I do not know exactly how it______.
A．was happening
B．happened
C．happens
D．has happened
参考答案
正确答案：B
解析：本题考查的是句子时态。原题的意思是：“当时我不在城里，所以不知道事情是怎样发生的。”根据语境可知，事情发生在过去，所以要用一般过去时。故选择B。
