--do you play sports?--Twice a week.A. How oftenB. How longC. How muchD. How many

问题补充：

--do you play sports?

--Twice a week.

A. How often

B. How long

C. How much

D. How many

答案：

(答案→)A. How often

B. How long

C. How much

D. How many

解析：

试题分析:根据答语twice a week可知询问的是频率，故用how often来提问，故选A。