What are they doing?
They are lining up.
What are they doing?
They are checking-in.
What is he doing?
He is printing his boarding pass.
What is he doing?
He is removing liquids.
What is he doing?
He is emptying his pockets.
What is he doing?
He is putting his shoes in a tray.
What are they doing?
They are going through security.
What are they doing?
They are going to their gate.
What is she doing?
She is showing her boarding pass.
What are they doing?
They are boarding the plane?.
What is this?
It's a passport.
What is this?
It's an aisle seat.
What is this?
It's a window seat.
What are these?
they are liquids.
What is this?
It's a tray.
What is this?
It's a metal detector.
