Who's this?
husband
Who's this?
grandson
What is she doing?
She is playing the trumpet.
What's this?
trumpet
What's this?
flute
Who's this?
wife
What is the robot doing?
It is playing the guitar.
Who's this?
daughter
What's this?
violin
What are these?
drums
What is he doing?
He is playing the flute.
Who's this?
granddaughter
What are they doing?
They are dancing.
What is the crab doing?
It is playing the violin.
What is the dog doing?
It is playing the drum.
What's this?
guitar
What's this?
piano
Who's this?
son
What is the cat doing?
It is playing the piano.