问题补充：
---- do you go to the cinema?
---- Hardly ever. I always see movies on TV.
A. How long
B. How often
C. How soon
D. How many times
答案：
A. How long
(答案→)B. How often
C. How soon
D. How many times
解析：How long多长；How often多久一次；How soon多久；How many times多少次。根据下文，几乎从来不。我总是在电视上看电影。可知上文问的是频度，故选B。
