题目内容

–I can’t stop smoking, doctor.
--For your health, I’m afraid you________.
A．mayB．needC．mustD．have to
D

试题分析：句意：医生，我戒不了烟。从你的健康考虑，我想你必须戒掉。may表示“或许，可能”，need表示“需要”，must强调主观上的必须，而have to强调客观上的不得不，在这里是医生交代病人客观原因要求他必须戒烟，而不管他主观上愿不愿意；故选D。
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