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1. Children who like music very much are often good at English. 

2. A bus which carries lots of people is a big car. 

3. The postman who works in the village is very old. 

4. He arrived with a friend who waited outside in the car. 

5. I don't remember the man who knew the truth. 

6. The children often go swimming on Sundays when they have much free time.

7. The tree which stands near the gate of my house has lovely flowers.

8. The book which was being read by me at 8 o'clock last night was a lovely story. 

9. They called a doctor who lived nearby. 

10. The guitar which was my birthday present is very expensive.