What's she doing?
She's sleeping.
What's she doing?
She's exercising.
What's she doing?
She's writing.
What's he doing?
He's eating.
What's he doing?
He's playing baseball.
What's he doing?
He's running.
What's she doing?
She's cooking.
What's he doing?
He's taking a photo.
What's she doing?
She's jumping rope.
What's he doing?
He's playing basketball.
What's she doing?
She's playing soccer.
What's he doing?
He's dancing.
What's he doing?
He's drinking water.
What's she doing?
She's reading.
What's he doing?
He's bowling.
What's he doing?
He's playing tennis.
What's he doing?
He's flying a kite.
What's he doing?
He's riding a horse.
What's he doing?
He's drawing.
What's he doing?
He's biking / He's riding a bike.
What's he doing?
He's roller skating.
What's he doing?
He's listening to music.