Question

【题目】— ________ do you surf the Internet?
— Once a week.
A.How
B.How old
C.How often
D.How many times

Answer 1

【答案】C
【解析】根据答语Once a week.（一周一次）可知是询问频率，How 怎样，How old 多大，How often 多久一次，How many times多少次，故选C。