--does it take you to get to your school from your home?About 20 minutes by bus. A. How

问题补充：

--does it take you to get to your school from your home?

--About 20 minutes by bus.

A. How about

B. What time

C. How long

D. How far

答案：

A. How about

B. What time

(答案→)C. How long

D. How far

解析：从答语来看，前面应为提问时间长度的疑问词how long 多久。