Question

6.一Dad,why should I stop computer games?

—For your health,my boy,I’m afraid you.

   A. to play;must   B. playing;have to

    C.to play;can   D. playing;may

Answer 1

6.B

6.B   本题考查stop doing sth.和情态动词have to。根据儿子的提问可知，父亲要儿子停止玩电脑游戏停止做某事”为stop doing sth.；表不客观上的“必须，不得不”用have to。故选B。