Anything, Something, Nothing

Any + thing = anything
Is there anything in the pencil box?
Is there anything in the bag?

Some + thing = anything
Yes, there is something in the pencil box.
Yes, there is something in the bag.

No + thing = Nothing
No, there is nothing in the pencil box.
No, there is nothing in the bag.

Anything, something, nothing
Is there ____ in your cup?
Yes, there is _____ in my cup.
Is there ____ in your glass?
No, there is ___ in my glass.