What's this?
It's a/ an old pencil case.
What's this?
It's a/an orange.
What's this?
It's a/an umbrella.
What's this?
It's a/an pen.
What's this?
It's a/an paintbrush.
What's this?
It's a/ an new ball.
What's this?
It's a/ an rubber.
What's this?
It's a/an new ruler.