Помогите исправить ошибки. 1.Is you thirsty? 2. They have build a house. 3.Are these tickets their? 4.I have catch thebus.

1.Are you thirsty? 2. They have built a house.3.Are these tickets theirs? 4.I have caught the bus.5. Who has sold this to you? 6.I have a car of my own.7.We were cleaning the room.8.We have not poured the coffee yet.