You have got a pen. Have you got a pen?
I haven't got a pen.
My brother has got an interesting book. Has my brother got an interesting book? My brother hasn't got an interesting book.
My friends have got a dog. Have your friends got a dog? My friends haven't got a dog.
They have got many friends. Have they got many friends? They haven't got many friends.
I have got a rubber. Have you got a rubber? I haven't got a rubber.