Tieu Vy is the most beautiful girl _____ the Vietnam Beauty contest.

There are too many poor people ____ do not have enough to eat in the world.

My uncle, _____ you met yesterday, is a famous lawyer in the town.

My brother, who met you yesterday, works for a big firm.

=>My brother, _______, works for a big firm.

The envelop which lies on the table has no stamp on it.

=>The envelop _____ on the table has no stamp on it.

It is much easier for a foreigner to become an American citizen if he has a close relative whoever is already an American. 

Mrs. Brooks is an experienced teacher. I have great respect for her.

The last student that was interviewed was Tom.

=>The last student _______.

John, who is my friend, has studied English for ten years.

=>John, ________ , has studied English for ten years.

They are looking for the man and his dog ____ have lost the way in the forest.

Benzene, which was discovered by Faraday, became the starting point in the manufacture of many dyes, perfumes and explosives.

=>Benzene, _____ by Faraday, became the starting point in the manufacture of many dyes, perfumes and explosives.

I need to find a painting ____ will match the rest of my room.

The man who is standing there is a clown.

=>The man ______ there is a clown.

The Smiths, _____ house was destroyed in the explosion, were given rooms in the hotel.

Choose the best answer.

Do you know the girl ______Tom is talking to?

The man who is standing there is a clown.

=>The man __________.