помогите с английским, завершите предложения do , does , don't, doesn't ​

Mike: Where do you live?

Sarah: I have a very small flat in the center of the city.

Mike: Do you have brothers and sisters?

Sarah: Yes, I have one brother.

Mike: What does he do?

Sarah: He works in a shop.

Mike: Does he have a flat?

Sarah: No, he doesn't. He lives with our parents.