It's playing video games.
He's cooking.
She's painting.
He's singing.
It's flying.
It's calling.
He's running.
He's sleeping.
They riding.
They're playing the piano.
He's doing the splits.
They're playing football.
He's watching TV.
It's walking.
He's eating.
He's reading a book.
She's shopping.
It's dancing.
It's skipping.
It's swimming.