问题补充:
--- do you take exercise?
--- Twice a week.
A. How many
B. How much
C. How often
D. How long
答案:
A. How many
B. How much
(答案→)C. How often
D. How long
解析:本题考察副词词组。
How many多少(询问可数名词数量)
How much多少(询问不可数名词的量/ 价格)
How often多久(询问频率)
How long多长(询问物体或时间的长度)
【翻译】你多久做一次运动?一周两次