1. The building where he lives is very old.
2. I will tell you something which you didn't know before.
3. I'll never forget the day when I met you.
4. Although it was cold, Tom still went swimming.
5. John is very sad because he fails the final exam.
6. He never left the house where he had been born.
7. I met the man who works in a bank.
8. Here are the letters which arrived this morning.
9. Although my grandfather is very old, he is still young at heart.
