What are they doing?
They're going to the cinema.
Where are they?
They're at home.
What does she do on Fridays?
She plays tennis (on Fridays).
What's she doing?
She's dancing.
What does he do on Sunday mornings?
He stays in bed late.
What's she doing?
She's doing (her) homework.
What's she doing?
She's sending instant messages.