--What do you usually do after school?--I usually play basketball with my friends.A. a B.

问题补充：

--What do you usually do after school?

--I usually play basketball with my friends.

A. a B. the C. 不填

答案：

解析：句意:放学后,你通常做什么?_我通常和我的朋友们打篮球.play后接球类运动时,一般不加冠词,故选C.