What is he doing?
He is swimming.
What is she doing?
She is playing the piano.
What is he doing?
He is riding a bike.
What are they doing?
They are playing tennis.
What is she doing?
She is playing basketball.
What are they doing?
They are having lunch.
What are they doing?
They are watching TV.
What is he doing?
He is playing the guitar.
What is he doing?
He is painting.
What is he doing?
He is eating.
What is he doing?
He is doing homework.
What is he doing?
He is running.