— I’m going to travel to Sydney. Would you please tell me about your experiences there?— .

问题补充：

— I’m going to travel to Sydney. Would you please tell me about your experiences there?

— .Let’s discuss it over lunch.

A. Go ahead

B. It just depends

C. That’s wonderful

D. By all means

答案：

A. Go ahead

B. It just depends

C. That’s wonderful

(答案→)D. By all means

解析：by all means“(表示同意)当然可以, 没问题”；Go ahead“前进, 有进展; 继续干下去”；It just depends“视情况而定”；That’s wonderful“太好（妙）了”，均不合题意。