问题补充:
--- do you do exercise ?
---Once a week .
A. How long B. How often C. How soon
答案:
解析:one a week一周一次是频率副词,其问句应用how often来提问。
时间:2019-12-01 07:54:36
--- do you do exercise ?
---Once a week .
A. How long B. How often C. How soon
解析:one a week一周一次是频率副词,其问句应用how often来提问。