This is/These are
This is a chair.
This is/These are
These are rubbers.
This is/These are
These are crayons.
This is/These are
This is a shoe.
This is/These are
This is a book.
This is/These are
This is a board.
This is/These are
These are bags.
This is/These are
These are bookcases.
This is/These are
These are papers.
This is/These are
These are rulers.
This is/These are
This is a bookcase.
This is/These are
This is a crayon.
This is/These are
These are markers.
This is/These are
This is a pencilcase.