What's this?
It's a pen.
What's this?
It's a chair.
What's this?
It's a pencil.
What's this?
It's a bag.
What color is this?
It's green.
What color is this bag?
It's yellow.
What color is this?
It's blue.
What's this?
It's an eraser.
What's this?
It's a book.
What color is this?
It's red.
What's this?
It's a table.