What are they doing?
They are dancing
What is she doing?
She is playing the guitar
What is he doing?
He is taking a shower
What is he doing?
She is cycling
What is she doing?
He is cooking
What is he doing?
She is working / using the computer
What is he doing?
She is listening to music
What is she doing?
She is reading
What is she doing?
She is talking on the phone / making a phone call
What are they doing?
They are playing soccer
What is he doing?
He is working out / exercising
What are they doing?
They are playing tennis
What is he doing?
He is writing
What is he doing?
He is swimming
What are they doing?
They are eating