－ do you go to the English club?－Once a week.A. How oldB. How oftenC. How muchD. How many

问题补充：

－ do you go to the English club?

－Once a week.

A. How old

B. How often

C. How much

D. How many

答案：

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。