问题
选择题
---______ do you go shopping, Mary?
--- Twice a week.
A.How often
B.How much
C.How far
D.How long
答案
答案:A
疑问词辨析。How often多久一次;How much多少钱; How far多远;How long多长。根据答语,一周两次,可知询问的是频率,故用how often来提问。选A。