What place is this?
department store
What are they doing at the post office?
They're mailing letters.
What place is this?
cinema
What is she doing at the park?
She's kicking a ball.
What place is this?
supermarket
What place is this?
park
What are they doing at the cinema?
They're watching a movie.
What place is this?
library
What are they doing at the supermarket?
They're buying groceries.
What are they doing at the department store?
They're shopping.
What place is this?
post office
What are they doing at the library?
They're borrowing books.