My friend can can can all day lond . can and can very well . but can*t

My friend can play football, can listen to music and can read all day long.  i can cook and play piano and can swim very well. but we both can't cycle. 

1. i read books in the evening. 2. i do  not  read  books in the morning. 3. i am writing an exercise now. 4. i  am  not writing  a letter now. 5. they are playing  in  the yard now. 6. they  aren't playing  in the street now. 7. are they  playing  in the room  now? 8. he helps his mother every day. 9. does he help his mother every day? 10. he  doesn't  help his mother every day. 11.  do you go to school on sundays? 12. my friend doesn't  like to play football. 13. i  am  not  reading  now. 14. he is  sleeping  now. 15. we  don't  go to the country in winter. 16. my sister eats  sweets every day. 17. she  is  not eating  sweets now. 18. they do their  homework in the afternoon. 19. they  don't  go for a walk in the evening. 20. my  father  doesn't   work on sunday. 21. he works every day.