---- Did you watch the football match yesterday?
---- Yes, I did. You know, my brother in the match at that time.
A. is playing
B. was playing
C. has played
D. had played
网友回答
A. is playing
(答案→)B. was playing
C. has played
D. had played
解析：考查时态。根据关键词at that time在那时，这是一个过去的时间点，表示在过去的一个时间点上发生的事情，使用过去进行时。句意：—昨天你看那场足球赛了吗？—是的我看了。你知道，在那时我的哥哥正在参加那场比赛。故B正确。