What is he doing?
He's writing a story.
What is he doing?
He's climbing a tree.
What is she doing?
He's playing the guitar.
What is she doing?
She's listening to music.
What are they doing?
They're taking a selfie.
What is she doing?
She's sending a text message.
What are they doing?
They're playing volleyball.
What is he doing?
He's making a sandwich.
What is she doing?
She's riding a horse.
What are they doing?
They're riding a bike.
What is he doing?
He's running.
What is he doing?
He's skateboarding.
What is he doing?
He's swimming.
What are they doing?
They're surfing.
What are they doing?
They're singing.