— How far can you run without stopping?— . I’ve never tried. A. Don’t mention it.B. That’s

问题补充：

— How far can you run without stopping?

— . I’ve never tried.

A. Don’t mention it.

B. That’s all right.

C. I have no idea.

D. Go ahead.

答案：

A. Don’t mention it.

B. That’s all right.

(答案→)C. I have no idea.

D. Go ahead.

解析：考查交际用语：A. Don’t mention it不用谢，B. That’s all right.没关系，C. I have no idea.我不知道，D. Go ahead. 请便，句意：--你一下不停能走多远，--我不知道，我没有试过。选C。