What’s in the Yellow Box



What’s in the____box, _____box
What’s in the ____box? I don’t know,
Let’s find out!

Another Version
What's in the _____ box?
____box, _____box.
What's in the _____box?
I don't know!
Let's open up the ____box,
____box,  ____ box!
Let's open up the ____box!
Then we'll know!