单项选择。从A、B、C、D四个选项中选出可以填入空白处的最佳*。---HaveyouseenMr.Black...
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问题详情:
单项选择。从A、B、C、D四个选项中选出可以填入空白处的最佳*。
---Have you seen Mr. Black these days, Jack?
---Yes, I met him when I _______ in the street yesterday.
A. was walking B. walked C. have walked D. is walking
【回答】
A
知识点:动词时态
题型:选择题