What are they doing?
They are riding their bikes.
What is she doing?
She is walking the dogs.
What is she doing?
She is exercising.
What are they doing?
They are shopping.
What is he doing?
He is washing his car.
What is he doing?
He is walking his dog.
What is she doing?
She is reading.
What are they doing?
They are playing tennis.
What are they doing?
They are listening to music.
What is he doing?
He is watching TV.