--How do you go to the cinema?---Once a week.A. longB. oftenC. soonD. many

问题补充：

--How do you go to the cinema?---Once a week.

A. long

B. often

C. soon

D. many

答案：

A. long

(答案→)B. often

C. soon

D. many

解析：从答语Once a week可以看出,应用How often来提问.