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:句意:---爸爸,我为什么必须停止玩电脑游戏,----为了你的健康,我的孩子。Stop to do 停下来去做另一件事,Stop doing 停止正在做的事 根据句意,故选D。