What is it?
This is a rubber
Who's this?
This is a teacher
What is it?
This is a ruler
What is it?
This is a desk
What color is the desk?
The desk is brown
Who's this?
This is a pupil
What color is the chair?
The chair is blue
What color is the ruler?
The ruler is green
What is it?
This is a classroom
What color is the rubber?
The rubber is red
What is it?
This is a pencil case
What is it?
This is a chair