Составьте и ответьте : 1. you/not have to go/ to school on saturdays 2 you/not have/so much homework every day 3 your friend / ask/ you to help him to prepare for a test 4 you/ not understand your homework !

1. Don't you have to go to school on Saturdays? - yes, I don't
2. Don't you have so much homework every day? - yes, I don't
3.does your friend ask you to help him to prepare for a test? - no, he doesn't
4. Don't you understand your homework? - no, I do