???
This is a ball.
???
These are (six) balls.
???
This is a camera.
???
These are (six) robots.
???
These are (seven) skateboards.
???
This is a lorry.
???
This is a chair.
???
These are (two) lorries.
???
These are (four) watches.
???
These are (five) tablets.
???
These are (two) chairs.
???
These are cameras.
???
This is a robot.
???
This is a tablet.
???
These are (two) aliens.
???
This is an alien.
???
This is a kite.
???
This is a watch.
???
These are (two) dogs.
???
These are (three) kites.