1) I'm doing my homework now. I'm not doing my homework now. Am I doing my homework now? 2) Jake is watering the flowers now. Jake isn't watering the flowers now. Is Jake watering the flowers now? 3) Alina is looking for help with her hometask at the moment. Alina isn't looking for help with her hometask at the moment. Is Alina looking for help with her hometask at the moment? 4) My mother is working now. My mother isn't working now. Is my mother working now? 5) You are going to Moscow by train now. Are you going to Moscow by train now? You are not going to Moscow by train now. Как то так. Имена и названия можно менять, без разницы.