"I will make Italian food tomorrow."
Translation:Bidh mi a' dèanamh biadh Eadailteach a-màireach.
Yes. The algorithm that Duolingo uses for determining what is 'near enough' is atrocious. But I do notice you are not using a spell checker. This should be readily available on any platform in English but it can be a bit more of a challenge to get one to work in Gaelic.
Opera on Smartphone
I can set up various different spell checkers including Gaelic. With most that I have tried, including Welsh, it can be set to check allow Welsh and English at the same time, which avoids switching, but for some unknown reason this is not available in Gaelic. Nevertheless, I can switch fairly quickly when I need to.
Avast on PC
I have not managed to find a Gaelic spell checker.
Firefox on PC
I was able after searching on the internet to find where to get dictionaries - https://addons.mozilla.org/en-GB/firefox/language-tools/. I presume there is a different address if you do not have your browser set to UK English (which they mistakenly call GB English). Once I had clicked on the dictionaries I wanted I was able to select between them when I right-clicked where I was writing but it seems a bit temperamental as to whether any dictionary is on by default, and if so which.
Obviously there are lots of other browsers that I know nothing about. D