1. Brenda is a friend whom I went on holiday with.

2. This is Mr Smith whose son Bill plays in our team.

3. Her book which became a best seller was published last year.

4. This is the bank which we borrowed the money from.

5. I told you about a person who is at the door.

6. Jack whose car had broken down had to take a bus.

7. I lent you a book which was written by one my friends.

8. Some boys who have been released were arrested.  

9. Do you know a restaurant where we can have a good meal?

10. I don’t remember the day when I left school.

11. This is the man whom I met in Paris.

12. I wanted the painting which you bought.

13. This is the chair which my parents gave to me.

14. She’s the woman who telephoned the police.

1. Brenda is a friend. I went on holiday with her.
=>Brenda, whom I went on holiday with is a friend
2. This is Mr. Smith. His son Bill plays in our team.
=>This is Mr. Smith, whose son Bill plays in our team.
3. Her book was published last year. It became a best-seller.
=>Her book, which became a best-seller was published last year.
4. This is the bank. We borrowed the money from it.
=>This is the bank, where We borrowed the money from
5. I told you about a person. She is at the door.
=>I told you about a person, who is at the door.
6. Jack's car had broken down. He had to take a bus.
=>Jack whose car had broken down had to take a bus.
7. I lent you a book. The book was written by one of my friends
=>I lent you a book, which was written by one of my friends
8. Some boys were arrested. They have been released.
=>Some boys, who have been released were arrested