Ну, нужно сделать предложение вопросительный и негативными.
1)Are they wearing jeans?
They are not wearing jeans.
2)You are not cooking dinner.
Are you cooking dinner?
3)It is not snowing day.
Is it snowing day?
4)I'm not doing to the park right now.
Am I doing to the park right now?
5)He is not listening to music.
Is he listening to music?
Попробуй так, но я не знаю правильно ли это.