That are pens.
Those are pens.
Those is a camera.
That is a camera.
This are rubbers.
These are rubbers.
These is a book.
This is a book.
That is a bag.
This is a bag.
These is a phone.
That is a phone.
This is a ruler.
That's a ruler.
This is a photo.
That is a photo.
These are pencils.
Those are pencils.
That are pencil cases.
These are pencil cases.
Those is a notebook.
That's a notebook.
Those is a glue stick.
This is a glue stick.