What is it?
It is music.
What are they?
They are presents.
What are these?
These are balloons.
When is your birthday?
My birthday is ....
Do you like cake?
Yes, I do. // No, I don't.
What is it?
It is a cake.
What are they?
They are cakes.
Who is he?
He is a clown.
What is he doing?
He is listening to music.
What is it?
It's a candle.