melymarin2008 melymarin2008 09-04-2024 Inglés contestada Example: I'm not at school. I wasn't at school. 1. Mark isn't here. 2. This dog is funny. 3. I am not busy. 4. You are very lucky. 5. The winter is cold. 6. They aren't tired. 7. We are hungry. 8. This book isn't boring..