clean the classroom
clean the classroom
保持-------the classroom clean.
______ clean the classroom.
who ____(clean) the classroom?
i must____(clean) the classroom.
let is clean the classroom?
the students clean the classroom every day
The student____(clean)the classroom every day
they didn't clean the classroom yesterday.the classroom ___
clean the classroom 翻译成汉语
为了保持教室干净------ -------- the classroom clean
You must clean the classroom.(改为祈使句)