Нужно из двух предложения сделать одно. Relative clauses. 6. I bought them a gift. They appreciated it.
7. My cousin's flat is in the same building as mine. He bought it last year.
8. We will go on holiday in December. All the Christmas celebrations take place then.
9. Helen is studying medicine. She is very popular
10. Bill wants to be a professional football player. He's nearly two metres tall.​

1) I had bought them a gift,which they appreciate.
2) My cousin bought the same building as mine last year
3) We will go on holiday,because all the Christmas celebrations take place then
4)Helen is studying medicine and she is very popular
5) Bill is nearly two meters tall because of this he wants to be professional football player