把下面的主动语态改为被动语态（在线等！）

Question

1.He wrote a poem.
2.The students are planting some trees and flowers.
3.They are to open up a new business next week.
4.Children couldn't have done all this damage.
5.All of us will see him off at the airport.
6.They feed the tigers at the zoo three times a day.
7.You must hand in your homework before five.
8.People say that she is a good teacher.

快一点。麻烦帮忙一下。谢谢。

Answer 1

1.A poem was written by him
2.Some trees and flowers are being planted by the students
3.A new business is to be opened by them next week
4.All this damage couldn't have been done by children
5.He will be seen off by all of us at the airport
6.The tigers at the zoo are fed by them three times a day
7.Your homework must be handed in before five
8.she is said to be a good teacher
竟然还有人比我快！但是楼上的有些错误哦！

Answer 2

1.A poem is wrote by him.
2.Some trees and flowers are planted by the students.
3.A new business is to be opened up by they next week.
4.All this damage couldn't have been done by children.
5.He will be saw off by all of us at the airport.
6.The tigers are feed by they at the zoo three times a day.
7.Your homework must be handed in before five.
8.She is said by people that she is a good teacher.

Answer 3

1. A poem was written by him
2.Some trees and flowers are being planted by the students.
3.A new business is going to be opened by them next week.
4.All this damage couldn't have be done by children.
5.He will be seen off at the airport by all of us.
6.The tigers at the zoo are fed three times a day by them
7.Your homework must be handed in before five .
8.She is said to be a good techer.