问题补充:
---- do you brush your teeth?
----- Twice a day.
A .How much B. How often C. How long
答案:
解析:How much多少钱;How often多久一次;How long多长。根据下文,一天两次。可知上文提问的是频率,故选B,你多久刷一次牙?
时间:2020-09-13 08:30:17
---- do you brush your teeth?
----- Twice a day.
A .How much B. How often C. How long
解析:How much多少钱;How often多久一次;How long多长。根据下文,一天两次。可知上文提问的是频率,故选B,你多久刷一次牙?