The students promise that they will keep the classroom clean.(保持原句意思不变）改为The student promise( ) ( ）the classroom clean.
问题描述：
The students promise that they will keep the classroom clean.(保持原句意思不变）
改为The student promise( ) ( ）the classroom clean.
答
The students promise (to) (keep) the classroom clean.
答
你问的啥？
答
The students promise to keep the classroom clean.
答
The students promise that the classroom will be kept clean.