1. I don't know the woman whose son broke the windows yesterday.

2. The most intelligent students here whom we met at the meeting yesterday are from Japan.

3. Mr. Brown, who is the manager of my company, is only thirty.

4. The opportunity which she owed to her success came unexpectedly.

5. The man to whom I spoke gave me good advice.

6. The girl to whom I'll introduce you is Helen.

7. Peter is the first person to be interviewed this morning.

8. I recently went back to Paris, where I was born 30 years ago.

9. That man over there whose name I don't know is an artist.

10. My school has 30 computers, most of which are second-hand.

11. The car which I have searched for since last year was made in Japan.

12. Opposite our house there is a nice park which has some beautiful trees and flowers.

13. The person to whom you should talk about your problems is sitting at the desk.

14. Mr. Edwards, whose health hasn't been good recently, has gone into the hospital for some tests.

15. Do you see those letters which came yesterday evening?

16. The psychologists who have made many important discoveries study the nature of sleep.

17. I'll take you to Dalat, where you can enjoy fresh air.

18. I don't know the reason why she was sacked.

19. You are the only person to win the first prize at Physics in my school.

`1.` I don't know the woman whose son broke my windows yesterday.

`2.` The most intelligent students here whom we met at the meeting yesterday are from Japan.

`3.` Mr. Brown, who is only thirty, is the manager of our company.

`4.` The opportunity to which she owed her success came unexpectedly.

`5.` The man to whom I spoke gave me good advice.

`6.` The girl to whom I'll introduce you is Helen.

`7.` Peter is the first person to be interviewed this morning.

`8.` I recently went back to Paris, in which I was born 30 years ago.

`9.` That man over there whose name I don't know is an artist.

`10.`  My school has 30 computers, most of which are second-hand.

`11.` The car for which I have searched since last year was made in Japan.

`12.` Opposite our house there is a nice park where there are some beautiful trees and flowers.

`13.` The person to whom you should talk about your problems is sitting at the desk.

`14.` Mr. Edwards, whose health hasn't been good recently, has gone into the hospital for some tests.

`15.` Do you see those letters that came yesterday evening?

`16.` The psychologists who study the nature of sleep have made important discoveries. 

`17.` I'll take you to Dalat, where you can enjoy fresh air.

`18.` I don't know the reason for which she was sacked.

`19.` You are the first person to have won the first prize at Physics in my school.

@ `Ly`