What's he doing?
He is smiling.
What's she doing?
She is laughing.
What is he doing?
He is working.
What is he doing?
He is reading.
What is he doing?
He is driving.
What is he doing?
He is smelling.
What are they doing?
They are walking.
What is she doing?
She is studying.
What is he doing?
He is writing.
