Afimative:1. We are happy. 2. They are my friends. 3.She is tired. 4. The car is old. 5. Mary is Paul's mother. 6. The book is old. 7. I am your brother. 8. The door is open. 9. You are lazy. 10. We are here in school.
Negative: We aren not happy. They are not my friends. Shi is not tired. The car is not old Mari is not Paul's mothe. The book is not old. I am not your brother. The door is not open. You are not lazy. We are not here.
Interrogative. Are we happy? Are they your friends? Is she tired? Is the car old? Is Mary Paul's mother? Is the book old? Are you my brother? Is the door open? Am I lazy? Are we here in school?