1. Yes, I am/ No, I'm not/
2. No, my nsme isn't Robinson
3. Yes, my friends are at home/ No, my friends aren't at home.
4. Yes, the teacher is in the classroom/ No, the teacher isn't in the classroom.
5. Yes, the weather is fine today/ No, the weather isn't fine today.
6. Yes, we are friends/ No, we aren't friends.