=>
1. Mary, who went on holiday with me last year, is my close friend.
2. In spite of being tired, Mr.Brown went to the meeting.
3. If I were you, I would revise carefully for the exam to get good grades.
4. That actor whose name I've forgotten is very well-known.
5. It is over a year since I last saw them.
6. I think Paris is the most beautiful city in the world.
7. Do you know the beautiful girl who is talking to Tom?
8. The disaster which took place last month was very destructive.
9. The new typewriter which I bought cost me a lot of money.
10. The weather man says Ha Noi, which is the capital city of Viet Nam , will be partially cloudy.
11. The girl who didn't let us know her name helping us yesterday.
12. My sister, whose homework she always does correctly, is a hard student.
13. The song which was composed by Van Cao in 1944 became the anthem of North Vietnam in 1945.