问题补充:
- Dad, why must I stop computer games?
- For your health, my boy.
A. play
B. to play
C. to playing
D. playing
答案:
A. play
B. to play
C. to playing
(答案→)D. playing
解析:爸爸,我为什么必须停止玩电脑游戏呢?为你的健康考虑,我的孩子。stop to do sth停止做某事(停下来去做另一件事情);stop doing sth停止做某事(停止正在做的事情)。故选D。