Question

---______ do you go shopping, Mary?
--- Twice a week.

A．How often

B．How much

C．How far

D．How long

Answer 1

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。