问题补充：
—do you go to the movies?
—Hardly ever.
A. How long
B. How often
C. How many times
D. How soon
答案：
A. How long
(答案→)B. How often
C. How many times
D. How soon
解析：hardly ever表示频率，对频率提问的通常用how often，故选B. How long对长度提问，how many times 对次数提问，how soon 对多久以后提问。
