What's she doing?
She's playing basketball.
What's she doing?
She's playing tennis.
What's he doing?
He's playing football.
What's he doing?
He's playing the guitar.
What's she doing?
She's playing the piano.
What's he doing?
He's riding a bike.
What's she doing?
She's swimming.
What's he/she doing?
He's/She's watching TV.
What's he doing?
He's catching a ball.
What's she doing?
She's hitting a ball./She's playing baseball.
What's he doing?
He's kicking a ball.
What's she doing?
She's running.
What's she doing?
She's skateboarding.
What's she doing?
She's throwing a ball.
