Join these pairs of sentences with the relative pronouns. 

1. The boy thanked me. I gave the book to him.
2. I rent the house. The house is very expensive.
3. The chair is now mended. The chair was broken.
4. I like the guy. This person is handsome and easy-going.
5. An old friend is coming to visit me tomorrow. I received a letter from her.
6. That is the salesman. I bought my encyclopedia from him.
7. The examples helped us. They were written on the blackboard.
8. Can you lend me the book? You mentioned it last night.
9. Michael was very grateful for the present. His mother gave it to him.
10. We all enjoyed the games. They took place last month.