－ do you go to the English club?
－Once a week.
A. How old
B. How often
C. How much
D. How many
网友回答
A. How old
(答案→)B. How often
C. How much
D. How many
解析：A. How old多大年龄 B. How often 多久一次，表示频率 C. How much多少，修饰不可数名词 D. How many多少，修饰可数名词的复数形式；句意：你多久去一次英语俱乐部？一周一次。