问题补充：
— Do you know ?
— It’s about fifteen minutes’ walk.
A. how far is the post office
B. which is the way to the post office
C. how long did you reach the post office
D. how far it is to the post office from here
答案：
A. how far is the post office
B. which is the way to the post office
C. how long did you reach the post office
(答案→)D. how far it is to the post office from here
解析：英语宾语从句中一般为陈述语序。根据下文，大约步行十分钟的路程。可知上文问的是远近，故选D，你知道从这儿到邮局多远吗？
