1)
Is she a teacher?
Are we students?
2)
He isn't a pupil
You aren't a teacher
3)
А) I will have breakfast at 7 o'clock
Б) Will you have breakfast at 7 o'clock?
В) I won't have breakfast at 7 o'clock
Г) She will come to work at 8 o'clock
Д) Will she come to work at 8 o'clock?
Е) She won't come to work at 8 o'clock