3предложения в трех формах(утвердительная,отрицательная,вопросительная)present simple(всего должно 9 строчек получиться))

She is a doctor.
She isn`t a doctor.
Is she a doctor?

He has a dog.
He doesn`t have a dog.
Does he have a dog.

They are teachers.
They aren`t teachers.
Are they teachers?