Custom submit and show answers buttons

I have created my drag and drop but would like to add a different submit button than what is provided in storyline. Also, I would like to show the answers if the person taking the drag and drop wants to see them. 

Currently I am stumped. I have tried everything I can think of and can't seem to find a thread in the forums. The file is attached. 

To quote The Simpsons "Little help here."

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