1. My pen in isn't thin. Is my pen thin?
2. Kate isn't a teacher. Is Kate a teacher?
3. She isn't opening the exercise book. Is she opening the exercise book?
4. Jake isn't an engineer. Is Jake an engineer?
5.I am not closing the door. Am I closing the door?
6.Tom isn't a good boy. Is Tom a good boy?
7. Thin isn't my book. Is this my book?