将句子转化为被动语态.We should do something to improve our environment看补充
问题描述：
将句子转化为被动语态.We should do something to improve our environment看补充
1.We should do something to improve our environment.
( ) ( ) ( ) ( ) to improve our environment.
答
1.We should do something to improve our environment.
(Something ) (should) ( be) ( done) to improve our environment.