1. Are leaves falling? Yes, they are. The leaves are falling/No, they aren't. The leaves aren't falling.
2. Is sun shining? Yes, it is. The sun is shining./No, it isn't. The sun isn't shinig
3. Are the pupils discussing?Yes, they are. The pupils are discussing./No, they aren't. The pupils aren't discussing
4. Does he watch cartoons?Yes, he does. He watchs cartoons./No, he doesn't. He doesn't watch cartoons.
или может Is he watching cartoons? тут же вроде в Present Simple все
тогда ответы Yes, he is. He is watching cartoons/No, he isn't. He isn't watching cartoons.
5.Does she worry? Yes, she does. She worries./no,she doesn't. She doesn't worry
Is she worrying? Yes, she is.She is worrying/ No, she isn't. She isn't worrying.
6. Do we have a test? Yes, we do. We have a test/No, we don't. We don't have a test.
Are we having a test? (хотя такое предложение маловероятно)
Yes, we are. We are having a test./ No, we are not. We are having a test.
7. Do children take an exam? Yes, they do. They take an exam./No, they don't. They don't take an exam.
Are children taking an exam? (такое тоже вряд ли)
Yes, they are. They are taking an exam./No, they aren't. They aren't taking an exam.
фуух, а теперь послесловие
там где одно предложение - Present Progressive, где два - оно и Present Simple. Если надо было только в Present Simple напиши в лс и я допишу, прогрессив тут везде есть) вроде все)