问题 选择题

---_____must I take this medicine every day? 

--- Three times a day.

A.How long

B.How often

C.How far

D.How

答案

答案:B

回答语是每天三次的意思,表示的是频率,对此提问用how often,故选B,how long对长度提问,how far对路程提问,how对方式提问。

问答题
单项选择题