—I can’t stop smoking doctor.— For your health I’m afraid you.A. mustB. have toC. willD.

问题补充：

—I can’t stop smoking, doctor.

— For your health, I’m afraid you.

A. must

B. have to

C. will

D. can

答案：

A. must

(答案→)B. have to

C. will

D. can

解析：戒烟有利于健康，是客观上需要的做的事，不是人要求去做的，have to表示客观

必须的意思，故选B。