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