— Can you tell me it is from here to the Summer Palace?— Let me see. Its about 15 minut

问题补充：

— Can you tell me it is from here to the Summer Palace?

— Let me see. Its about 15 minutes ride.

A. how long

B. how soon

C. how much

D. how far

答案：

A. how long

B. how soon

C. how much

(答案→)D. how far

解析：根据下文的回答可知答案为D，表示问的距离有多远。