If you stop smoking , you can only expect to have a bad cough .A. won'tB. would notC. do

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(答案→)A. won't
B. would not
C. do not
D. can not
解析：will除了用作表示将来时的助动词外，还可用来强调愿意或不愿意。又如：
If you will would wait a moment , I will fetch the money . (如果你肯/愿意稍等片刻，我就把钱取来。)但是在表示不肯或不愿意时，则只能使用won't，不能使用would not。