问题补充:
They like after school.
A. playing the basketball
B. play basketball
C. to play the basketball
D. playing basketball
答案:
A. playing the basketball
B. play basketball
C. to play the basketball
(答案→)D. playing basketball
解析:句意:他们喜欢放学后打篮球。like doing sth.喜欢做某事。play basketball打篮球。故选D。