What is he doing?
He's playing cards.
What are they doing?
They're playing Frisbee.
What am I doing?
I'm playing board games.
What's he doing?
He's playing golf.
What's she doing?
She's taking photos.
What's he doing?
He's skipping.
What's she doing?
She's talking to a friend. / She's talking to friends.
What are they doing?
They're doing exercises.
What's she doing?
She's playing the violin.
What's he doing?
He's playing the guitar.
What's he doing?
He's playing the drums.
What's she doing?
She's playing computer games.
What are they doing?
They're playing basketball.
What's he doing?
He's playing football.
What's he doing?
He's skateboarding.
