What's he doing?
playing basketball
What's he doing?
He's running.
What activity is this?
drive a car
What are they doing?
playing badminton
What activity is this?
ride a bike
What activity is this?
sail a boat
What's she doing?
walking
What are they doing?
playing soccer
What's this?
a motorbike
What's this?
a bus
What's this?
a helicopter
What activity is this?
fly a plane