问题补充:
--- does he take this medicine?
---Twice a day.
A. How long
B. How often
C. How soon
D. How much
答案:
A. How long
(答案→)B. How often
C. How soon
D. How much
解析:四个选项分别表示多长、多久一次、多久和多少钱。根据答语,一天两次。可知选B,他多久吃一次这种药?
时间:2018-10-26 13:38:49
--- does he take this medicine?
---Twice a day.
A. How long
B. How often
C. How soon
D. How much
A. How long
(答案→)B. How often
C. How soon
D. How much
解析:四个选项分别表示多长、多久一次、多久和多少钱。根据答语,一天两次。可知选B,他多久吃一次这种药?