"All the Operas are in their written language" - but they're not. There are a lot of typos for a start. The second answer needs to be typed "and" rather than "et". It's Mitridate, not Mitridante, Il sogno di Scipione (not what you have which is nonsense), Idomeneo, re di Creta, not "do Creta", Lo sposo deluso not La sposa. And so on.
I'll have you know that und is the German for and, therefore it is Bastien und Bastienne. The rest of my errors I am sorry for, and I have fixed. I don't know if you have heard of something called autocorrect but it makes Quizmaking quite hard.