What is it?
It is a clock.
Who is this?
He is a boy.
What is it?
It is a picture. This is a picture.
Who is this?
She is a teacher.
Who is this?
She is a girl.
What is it?
It is a ball.
What is it?
It is a classroom. This is a classroom.
What is it?
It is a car. This is a car.
What are they?
They are a desk and a chair.
What is this?
It is a school uniform.