—Dad why must I stop computer games?—For your health my boy.A. play B. to play C. to pla

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，为什么我必须停止玩电脑游戏？——为了你的健康，我的孩子。Stop后面接动名词表示停止正在做的动作，接不定式表示停下来去做另一件事情。结合语境可知选D。