1. The girl who won the race is happy.
2. Anita, who is wearing a pink skirt, is the little girl.
3. You sent me a present, which I thank you very much for.
4. We went to the play last night, which we enjoyed very much.
5. This is Mr. Green, whose son won the championship last year.
6. I made a birthday card for my father, which he loves very much.
7. The students who are working in the school garden are in the ninth form.
8. Swimming, which is a good sport, makes people healthy.
9. The world, which was a great adventure for him, he knew very little about.
10. The man whom I talked to yesterday was very kind.
11. The car which Mr. Smith is driving looks new.
12. I have to call the man whose raincoat I accidentally picked up after the meeting.
13. We are living in a hotel which was built twenty years ago.
14. The subject about which Dr. Wilson spoke was interesting.
15. I apologized to the woman whom I spilled her coffee.