6. People who take physical exercise live longer.

7. Tom and peter, who were invited, didn't come.

8. There are some words which are very difficult to translate.

9. Mrs. White, who has been married for 4 years, has just had her second baby.

10. The woman who gave me this novel has died.

11. The student whose homework is late will be punished.

12. The building which was destroyed in the fire has now been rebuilt.

13. I bought a new typewriter which costs me a lot of money.

14. Sandra, whom you are talking to, works in advertising.

15. The man who is wearing a blue shirt is Mr. Tan.

16. Dr. John, who hasn't done his job well recently, lost his position.

17. I don't know the name of the woman to whom I spoke on the phone.

18. The cooker which we bought at nguyen kim supermarket yesterday is very high-qualified.

19. That director, whose name I have forgotten, is very famous.

20. We often go to visit our friends in Bristol which is only 30 miles away.