— does it take Mary to go to the bubby club? —Twenty minutes.A. How farB. How longC. How o

问题补充：

— does it take Mary to go to the bubby club?

—Twenty minutes.

A. How far

B. How long

C. How often

D. How much

答案：

A. How far

(答案→)B. How long

C. How often

D. How much

解析：How far多远；How long 多长；How often多久一次；How much多少钱。根据下文，二十分钟。可知上文问的是时间长短，故选B。