1. I am not going to play tennis 
2. You are not my sister 
3. She is not a popular musician 
4. He is not my boyfriend anymore 
5. I am not a ugly person 
6. You are not a bad guy 
7. They are not going to come back soon 
8. We are not going to give up 
9. She is not the girl I saw yesterday 
10. They are not my brothers 
11. We are not friends anymore 
12. You are not my teacher 
13. I am not hungry but I want some cookies 
14. He is not who i used to know 
15. You are not going to slap me