改被动语态:we must do everything possible to keep environment cle
改被动语态:we must do everything possible to keep environment cle
We must do everything possible to keep them ____(safety)
we must keep our classroom clean改被动语态
We must do everything possible to prevent such things from__
we must do it as soon as possible改写为被动语态
We must do something to help her被动语态
将句子转化为被动语态.We should do something to improve our environment
We must do a lot of work to keep our environment clean and t
what shall we do 改被动语态
初中英语变为被动语态we must keep our classroom clean
改被动语态.1.we must take Peter to hospotal at once.
wo must do sth to protcet the tigers改被动语态