What are these?
These are windows.
What's this?
This is a ruler.
What's this?
This is a book.
What are these?
These are pencils.
What are these?
These are rubbers.
What's this?
This is a bookcase.
What's this?
This is a pen.
What's this?
This is a pencil.
What are these?
These are pens.
What's this?
This is a folder.
What's this?
This is a bag.
What are these?
These are folders.
What's this?
This is a rubber.
What are these?
These are rulers.
What's this?
This is a door.
What are these?
These are bags.
What are these?
These are doors.
What are these?
These are bookcases.
What are these?
These are books.
What's this?
This is a window.