They're _______. They aren't _______.
They're watching a movie. They aren't [any thing].
What's he doing at the movie theater?
He's watching a movie.
Where's the department store?
It's between the supermarket and the restaurant.
What's she doing at the department store?
He's shopping.
What's she doing at the library?
She's borrowing books.
Where's the supermarket?
It's across from the department store.
What's he doing?
He's mailing letters.
What are they doing at the supermarket?
They're buying groceries.