What are you doing at the.................?
I'm shopping.
What are you doing at the................................?
I'm buying groceries.
Where is it?
It's a library.
What are you doing at the..................?
I'm mailing letters.
What are you doing at the................?
I'm kicking a ball.
What are they doing at the.........................?
They're watching a movie.
What are they doing at the.................?
They're kicking a ball.
What are they doing at the.................?
They're borrowing books.
What are they doing at the....................?
They're shopping.
What are they doing at the.................?
They're mailing letters.
What are they doing at the.................?
They're buying groceries.