问题
选择题
--_________ do you go to a movie?
--Twice a week.
A．How soon
B．How often
C．How old
D．How much
答案
答案：B
疑问词辨析。How soon多久；How often多久一次；How old多大；How much多少。
Twice a week.意思是一周两次，表示频率常用来回答以how often引导的特殊疑问句。故选B。