What is he doing?
He's selling.
What is he doing?
He's sleeping.
What are you doing?
I'm swimming.
What are you doing?
I'm writing.
What are they doing?
They are playing tag.
What is he doing?
He's drinking.
What are you doing?
I'm cooking.
What is he doing?
He's running
What are you doing?
I'm fishing.
What are you doing?
I'm walking.
What is she doing?
She's reading.
What is he doing?
He's eating.