Basically, Duolingo will only teach you certain words and phrases. As you progress to higher levels, the words will become slightly repetitive, and the phrases will start getting odd, and very unnatural. I can't really say that Duolingo, or any of the language apps teaches you colloquial...
Yeah some of it is in Ukrainian. It's a bunch of different languages, but Verka does say "one, two, three" (in German), and then the dansen, tanzen, mystery word. I have no clue
Dansen is some butchered spelling of dancing, as per the Eurovision song "Dancing lasha Tumbai". After a quick Google search it appears to be Tanzen, or something like that. I have no clue. I just like the song. And yes, I can pronounce them well. The added bonus of learning languages before the...
Impressive! Let's see what I can do in German! Warning: spelling will be all over r the place: ain, zvai, trai, dansen, kartoffel, doitch, yeah that's about it