5sentnces на положительное и 5 на отцрицательное и 5 на вопросительное present cont

She is reading a book now.
She is not reading a book now.
Is she reading a book now?
He is watching TV.
He is not watching TV.
Is he watching TV?
They are playing football.
Are they playing football? 
They are not playing football.
We are going home.
We are not going home.
Are we going home?
It is playing with a ball.
It is not playing with a ball.
Is it playing with a ball?