问题补充：
Yesterday afternoon, I basketball with my classmates for two hours.
A. play
B. played
C. have played
D. had played
答案：
A. play
(答案→)B. played
C. have played
D. had played
解析：句意：昨天下午我和同学一起打了两个小时的篮球。Yesterday afternoon是明确的过去的时间状语，只能用过去时。一般过去时也可以表示过去一段时间内发生的动作。故选B。
