—What were you doing when the UFO arrived?— I with my dog on the street.A. walked B. was w

发布时间：2020-08-21 13:09:21

—What were you doing when the UFO arrived?— I         with my dog on the street.
A. walked
B. was walking
C. is walking
D. have walked

网友回答

A. walked
(答案→)B. was walking
C. is walking
D. have walked
解析：考察时态，句意：当这个飞碟到达时，你正在做什么？结合语境可知下文应该用过去进行时回答，故选B
以上问题属网友观点，不代表本站立场，仅供参考！