They're [...]
They're doors.
It's a [...].
It's a pencil case.
It's a [...].
It's a ruler.
It's a [...].
It's a book / textbook.
It's a [...].
It's a chair.
It's a [...].
It's a board.
It's a [...].
It's a computer.
It's a [...].
It's a coat.
It's a [...].
It's a poster.
It's a [...].
It's a window.
It's a [...].
It's a rubber.
It's a [...].
It's a bag / rucksack.
It's a [...].
It's a map.
It's a [...].
It's a teacher.
It's a [...].
It's a pen.