____________ is knocking on the door.
SOMEBODY is knocking on the door.
Do you have _________ to eat ? I`m hungry.
Do you have ANYTHING to eat ? I`m hungry.
Do you know __________ who is famous ?
Do you know ANYBODY who is famous ?
There isn`t _________ on the bed.
There isn`t ANYBODY on the bed.
There isn`t _________ on the shelves.
There isn`t ANYTHING on the shelves.
There is ________ in the box.
There is SOMETHING in the box.