Translation of undo in German

If I wanted to integrate the above demo on our page, would we need to work with Vocabulix or do you have some other options? Could you send me some samples of other teachers, who integrated this demo?
Thanks for the phone conversation. In the attachment, I placed a very brief overview of possible Spanish words that could be entered into the system for the vocabulary beginners lesson. Please have a look.
As soon as I went to bed, incredibly loud music starting playing from right beneath my room. The music was so loud that I could not fall asleep despite my jet lag and despite being extremely tired.