-----Did you watch the basketball match yesterday?---Yes I did. You know my brother

问题补充：

-----Did you watch the basketball match yesterday?

-----Yes, I did. You know, my brother in the match.

A. is playing

B. was playing

C. has played

D. had played

答案：

A. is playing

(答案→)B. was playing

C. has played

D. had played

解析：考查时态。表示过去某一时刻进行的动作，用过去进行时态。句意：你看了昨晚的篮球赛了吗？是的看了，你知道吗当时我的哥哥也在比赛中打篮球。故选B。