Viết lại các câu sau bằng cách sử dụng mệnh đề quan hệ

Viết lại các câu sau bằng cách sử dụng mệnh đề quan hệ:

1. The car is very expensive. It was bought by my brother.
2. The movie was interesting. We watched it last night.
3. The teacher is very friendly. She teaches us English.
4. The cake is delicious. My mother baked it yesterday.
5. The man is my uncle. He helped me fix the bike.