What are your brothers doing?
They are singing.
What are you doing?
I am dancing.
What are your cousins doing?
They are watching TV.
What are we doing?
We are brushing our teeth.
What is your father doing?
He is playing guitar.
What are your sisters doing?
They are playing with toys.
What is your sister doing?
She is cleaning cleaning.
What' s/ is grandpa doing?
He's/ is reading a book.