问题
选择题
---________ do you do exercise ?
---Once a week .
A. How long B. How often C. How soon
答案
答案：B
one a week一周一次是频率副词，其问句应用how often来提问。
搜题请搜索小程序“爱下问搜题”
---________ do you do exercise ?
---Once a week .
A. How long B. How often C. How soon
答案：B
one a week一周一次是频率副词，其问句应用how often来提问。