问题
选择题
It's a rule in our school that the classroom _____ every day.[ ]
A. should clean
B. should be cleaned
C. should cleaned
D. should be cleaning
答案
答案：B
搜题请搜索小程序“爱下问搜题”
It's a rule in our school that the classroom _____ every day.[ ]
A. should clean
B. should be cleaned
C. should cleaned
D. should be cleaning
答案：B