问题补充:
.—? —I usually play tennis.
A. Why do you play tennis
B. What do you usually do on weekends
C. When do you play tennis
D. Where do you play tennis
答案:
A. Why do you play tennis
(答案→)B. What do you usually do on weekends
C. When do you play tennis
D. Where do you play tennis
解析:句意:——你经常在周末做什么?——我经常打排球。根据—I usually play tennis可知此处询问做些什么。故选B。