——Do you mind if I smoke?
——
A. Why not?
B. Yes, help yourself
C. Go ahead
D. Yes, but you’d better not
网友回答
A. Why not?
B. Yes, help yourself
(答案→)C. Go ahead
D. Yes, but you’d better not
解析： 本题考查交际用语，表示许可时，肯定回答常用“Yes, please./ Of course, you may./ Go ahead, please./ Not at all./ Just help yourself.”等表示。B和D选项前后矛盾。