What's this?
It's a DVDs player.
What is this?
It's a computer
What's this?
tablet
What does he do?
He turns on the light.
What's this?
It's a MP3 player
What's this?
smartphone
What does he do?
He turns off the light
What's this?
laptop
What's this?
It's TV
What's this?
It's a camera
What's this?
It's CD player