问题
选择题
---- _________ do you help your mother cook?
---- Once a week.
A. How long B. How C. How often
答案
答案：C
本题的回答语表示的是频率，对此提问用how often，故本题选C。
搜题请搜索小程序“爱下问搜题”
---- _________ do you help your mother cook?
---- Once a week.
A. How long B. How C. How often
答案：C
本题的回答语表示的是频率，对此提问用how often，故本题选C。