-I can't stop smoking, doctor.一For your health, I'm afraid you .A. must B. can C. have to D. need C [解析]句意:--医生.我戒不了烟.--为了你的健康.恐怕你必须戒烟.must必须.表示主观上的要求,can可以.表示允许,have to不得不.表示客观上的要求,need需要.表示必要性题目和参考答案——青夏教育精英家教网——

题目内容

—I can't stop smoking, doctor.

一For your health, I'm afraid you .

A. must B. can C. have to D. need

C 【解析】句意：——医生，我戒不了烟。——为了你的健康，恐怕你必须戒烟。must必须，表示主观上的要求；can可以，表示允许；have to不得不，表示客观上的要求；need需要，表示必要性。根据For your health,可知为了健康而戒烟，这是客观上的要求，故用have to，故选C。

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