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,whenI left school

1. Jack had to take a bus because his car had broken down.
2. I lent you a book that was written by one of my friends.
3. Some boys were arrested, but they have been released.
4. Do you know a restaurant where we can have a good meal?
5. I don’t remember the day when I left school.