Is this computer big or small?
It is big.
What are these?
They are socks.
What color is the phone?
It is red.
Are these trousers clean or dirty?
They are dirty.
What are these?
They are trousers.
What's this?
It's a phone.
Is this phone old or new?
It is new.
Do you wear trousers to school?
Yes, I do. / No, I don't.
Do you wear socks today?
Yes, I do. / No, I don't.
Are these socks long or short?
They are long.
Have you got a computer?
Yes, I have. / No, I haven't.
What is this?
It's a computer.