---Do you mind my smoking here?. Look at the sign! It says No smoking!A. Never mind.B

问题补充：

---Do you mind my smoking here?

--- . Look at the sign! It says, No smoking!

A. Never mind.

B. Of course.

C. You’d better not.

D. No, I don’t.

答案：

A. Never mind.

B. Of course.

(答案→)C. You’d better not.

D. No, I don’t.

解析： 上句句意：你介意我在这吸烟吗？根据答语中It says, No smoking!牌子上写着禁止吸烟，可知对方介意，所以选C你最好不要在这吸烟。