请把下列句子翻译成英文，要使用被动语态

Question

（1）工厂是在去年建成的
（2）这工作必须完成吗？
（3）教室已被我们打扫干净了。
（4）他被老师问了一个问题。
（5）这些书不能被卖掉。
（6）老人正受到精心照顾。

急用！请保证语法正确，谢谢！满意的我会追加悬赏分

Answer 1

1.This factory was finised last year.
2.Should this job be finished?
3.Classroom is cleaned by us.
4.He was asked a question by the teacher.
5.These books can't be sold.
6.These aged is taken good care of.

Answer 2

(1) The factory was built up last year
(2) This work must be completed?
(3) We have been cleaning classrooms clean.
(4) He was asked a question by the teacher
(5) These books can not be sold.
(6) The old man is carefully looked after.

Answer 3

The factory was builted last year.
Should the work has to be finished?
The classroom has already be cleaned up by us.
He was asked a question by the teacher.
these books can`t be sold out.
The old man is being taken good care of.