1. You are a nice woman. .
2. I am a teacher. .
3. He is a policeman. .
4. You aren't a student. .
5. She isn't from Italy. .
6. It is a green pencil. .
7. Yes, she is my sister. , .
8. He isn't from the USA. .
9. I am twelve years old. .
10. It is a black cat. .
11. I'm not a nurse. .
12. She is a nice child. .