问题
选择题
— ____ do you clean the classroom?
— Three times a day. [ ]
A. How long
B. How often
C. How soon
D. How many
答案
答案：B
搜题请搜索小程序“爱下问搜题”
— ____ do you clean the classroom?
— Three times a day. [ ]
A. How long
B. How often
C. How soon
D. How many
答案：B