—does your father play table tennis? —Twice a week.A. How longB. How oftenC. How soonD. H

问题补充：

—does your father play table tennis? —Twice a week.

A. How long

B. How often

C. How soon

D. How far

答案：

A. How long

(答案→)B. How often

C. How soon

D. How far

解析：How long多长；How often多久一次；How soon多久；How far多远。根据下文，一周两次。可知上文问的是，你的父亲多久打一次乒乓球？故选B。