There is a book on the desk
There is not a book on the desk
Is there a book on the desk?
There are some cats in the tree.
There are not any cats in the tree
Are there any cats in the tree?
There is a book on the desk
There is not a book on the desk
Is there a book on the desk?
There are some cats in the tree.
There are not any cats in the tree
Are there any cats in the tree?