Are these her socks?
Yes, they are.
What is he wearing?
He's wearing boots.
What's he wearing?
He's wearing a sweater.
Are these his shoes?
No, they aren't.
Is this his shirt?
No, it isn't.
Are these her pants?
No, they aren't.
Are these his shoes?
Yes, they are.
Are these her dresses
Yes, they are.