Ответ:
1. He put the book on the desk.
The book was put on the desk by him.
2. She took the pen out of the bag.
The pen was taken out of the bag by her.
3. They wrote the letter yesterday.
The letter was written by them yesterday.
4. They taught him English.
He was taught English by them.
5. I bought the suit last week.
The suit was bought by me last week.
6. They showed the film at the clip.
The film was shown at the clip by them.
7. He sold the car last year.
The car wad sold by him last year.
8. They returned the book to the library.
The book was returned to the library by them.
Объяснение: