Ex5
1. The play has been watched by me before.
2. Our city has been destroyed by the 1999 flood.
3. His pencil has been used instead by him.
4. Such a lovely dog has been seen by me for the first time.
5. The homework hasn't been done by the student yet.
6. She has been taken to the hospital by them.
7. The meeting has been cancelled by them.
8. My chair has been moved by someone.
9. He has been given a lot of money by someone.
10. All the students in the school have been invited by us.
11. He has been told by us not to be late again.
12. The English grammar has been explained by our teachers.
13. Have the above sentences been finished by you?
14. The mugger has been arrested by the police.
15. Five suspects have been arrested by the police.
Ex6
1. Their homework had been finished before they went to the cafeteria.
2. The housework had been done by her husband before 7 party yesterday.
3. The kitchen had been cleaned by David before he went shopping yesterday.
4. The video game had been played by Wonbin for four hours.
5. The film hadn't been seen by Ms Nina before.