I know zero Italian words.
At least that's what Duo's saying right now. I've finished my Italian tree, but Duo says I know zero words.
Edit: This is fixed now, I switched to German and back to Italian, and all the words came back.
Is your tree golden? That is interesting since you have a good streak and are level 25 in Italian. Maybe go to the words tab to see if you words are weak. Anyway, good job with your Italian and German! How long did it take you to get to level 25?