"He says no."
Translation:Lui dice di no.
I noticed that in looking for Italian resources. I found some that essentially matched Duo, some and that all looked like yours. But this lists those as "formal". Maybe Italian used to have a formal he and she as well.
Duo barely teaches Lei and Loro as the formal you. That makes sense as I have been told that the formal you is not used as much in Italy as the formal you of other European countries/languages. But in those lessons that did deal with the formal, there does appear to be very flowery formal language. I that has mostly gone away. I have also been told that there are actually quite a few different Italian languages regionally. So there may be variations there. It seems to me that vulgar Latin didn't die, it exploded leaving bits and pieces all across Europe.