帮我把下列英语句子改成被动语态形式的！加分

来源：百度知道 编辑：UC知道 时间：2024/05/17 04:50:52
1.Is the blackboard cleaned after every class?
2.Is your classroom cleaned by you every day?
3.Are the flowers/trees looked after by you?
4.Are you desks made of wood?
5.Is the computer used only by your teacher?

the blackboard is cleacned after every class
I cleaned the classroom everyday
I looked after the trees/flowers
the desks are made of wood
the computer is only used by the teacher

the blackboard is cleacned after every class
I cleaned the classroom everyday
I looked after the trees/flowers
the desks are made of wood
the computer is only used by the teacher
差不多。。。。。。

都是被动语态啊。还要怎么改啊？

这不就已经是了吗