If you _____ stop smoking, you can only expect to have a bad cough.

问题描述:

If you _____ stop smoking, you can only expect to have a bad cough.
A. won't B wouldn't C.don't D.can't
为什么选A

原因有二
1.条件状语从句,主句用一般现在时,if从句用一般将来时.
2.will 有意愿的意思 won't 是不愿意.符合语境.