—What a terrible earthquake!—Yes. It came at about 6.30 this morning. I to the bus stop a

发布时间：2020-08-21 08:08:58

—What a terrible earthquake!
—Yes. It came at about 6.30 this morning. I      to the bus stop at that time.
A. walk
B. was walking
C. walked
D. am walking

网友回答

A. walk
(答案→)B. was walking
C. walked
D. am walking
解析：根据前文的点时间，可知当时发生，用过去进行时态，故选B
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