Как ответить на вопрос are you a pupil?

Yes, i am                                                                                                               тут и объяснять-то нечего

Yes, i am no, i am not

1)-does he play football every day? -no, he doesn't. 2)-they swim well, don't they? - yes, they do. 3)-is it snowing? - yes, it is. 4)-what is she doing? - she is watching tv. 5)-what are they doing? -they are eating pizza.