I. Use a relative pronoun to combine each pair of sentences below. 1. The student is from China. He sits next to me. 2. I thanked the woman. This woman had helped me. 3. The professor is excellent. I am taking his course. 4. Mr. Smith said he was too busy to speak to me. I had come to see him. 5. The man is my father. I respect his opinions most. 6. I recently went back to Paris. It is still as beautiful as a pearl. 7. I recently went back to Paris. I was born in Paris nearly 50 years ago. 8. She is the most intelligent woman. I've ever met this woman. 9. Do you know the music? It is being played on the radio. 10. That man is an artist. I don't remember the man's name. 11. One of the elephants had only one tusk. We saw these elephants at the zoo. 12. That car belongs to Dr. Clark. Its engine is very good. 13. You sent me a present. Thank you very much for it. 14. This is Mrs. Jones. Her son won the championship last year. 15. I'll introduce you the man. His support is necessary for your project. 16. Rod Lee has won an Oscar. I know his sister. 17. Is this the style of hair? Your wife wants to have it. 18. A man answered the phone. He said Tom was out. 19. Do you know the building? The windows of the building are painted green. 20. Last week I went to see the house. I used to live in it.