英语被动语态学得好的亲进!help!

题目

英语被动语态学得好的亲进!help!
1.They cleaned the floor.（改为被动语态!）
2.They will finish the homework.(同上↑）
3.A new house__________(build) next year.

答案

The floor was cleaned by her.
The homework will be finished by them.
will be built.
同学,我深深的为你的智商感到抱歉..
这些真的是基础..