What's he doing?
He is playing the guitar.
What's she doing?
She is taking photos.
What's he doing?
He is listening to music.
What are they doing?
They are dancing.
What's he doing?
He is holding a balloon.
What's he doing?
He is drinking lemonade.
What's he doing?
He is singing.
What's she doing?
She is holding a present.