This is a/These are....
These are rulers.
This is a/These are....
This is a bag.
This is a/These are....
These are books.
This is a/These are....
This is a boy.
This is a/These are....
These are girls.
This is a/These are....
This is a pen.
This is a/These are....
These are books.
This is a/These are....
This is a teacher.
This is a/These are....
This is a pencil case.
This is a/These are....
These are notebooks.
This is a/These are....
This is a rubber.
This is a/These are....
These are pencils.