Bai tập 1: 1. Combine each pair of sentences by using an appropriate relative pronoun 1. The man is friendly. The man lives next to me. 2. There is the professor. I'm taking her course 3. That is the man. His son is an astronaut. 4. The man is friendly. I met him at the wedding last week. 5. Do you know the people? They live in the white house. 6. I thanked the woman. I borrowed her dictionary. 7. I like the people. We went to their house. 8. The waitress was friendly. She served us dinner. 9. I don't know the woman. The woman is speaking to Peter. 10. The people were nice. I met the people at the party last night. 11. The woman thanked me. I helped her. 13. There is the man. His car was stolen. 14. Over there is the man. I'm dating his daughter. 15. Over there is the woman. I met her husband yesterday. 16. I know a girl. Her brother is a movie star. 17. The woman gave me some information. I called her yesterday. 18. The police officer was kind. He gave me directions. 19. The people were friendly. We visited their house. 12. Do you like the doctor? He treated my son last month. 20. The man is famous. His picture is in the newspaper