They cieaned the floor.改为被动语态
问题描述：
They cieaned the floor.改为被动语态
答
是they cleaned the floor 吗？
如果是，
被动语态就是
the floor is cleaned by them
恩，就是这样，
希望能帮到你！
答
The floor was cleaned by them.
希望能够帮到楼主