What object is this?
It's a T-shirt. (clothes)
What objects are these?
These are DVDs.
What object is this?
It's a doll.
What objects are these?
These are coins.
What objects are these?
These are pencils.
What object is this?
It's a board game.
What objects are these?
These are toys.
What objects are these?
These are sunglasses.
What object is this?
It's a CD.
What objects are these?
These are books.