Помогите пожалуйста решить, буду благодарна

1. are sitting 2. isnt snowing 3. are waiting 4.am watching 5. are arguing 6. isnt having 7. are coming  8. isnt going 9. is standing 10. arent having 11. is improving 12. are disappearing 13.isnt looking. is sleeping 14. is pointing 15.am not discussing