1.They have already read this book.
This book has already been read by them
2.Someone has stolen his bicycle.
His bicycle has been stolen by someone.
3.People in many countries speak English.
English is spoken by many people in many countries
4 .Mao Dun wrote the novel Midnight.
The novel Midnight is writen by Mao Dun
5.The students asked the teacher to tell a story.
The teacher was asked to tell a story by the students
6.You will see this kind of program everywhere.
This kind of program will be seen by you everywhere
7.They will send him to study abroad next year.
He will be sent to study abroad next year by them
8.I have cleaned the window several times.
The window has been cleaned several times by me
9.He will show you around the factory tomorrow.
You will be shown around the factory tomorrow by him
10.She's going to make a new film next month.
A new film is going to be made by her next month