I know it's not "proper" English - but I do think this is a case where "ya'll" or "you all" at least would clarify this is plural.
Yes, you can write "you all", they accepte it usually (for clarification).
I answered 'You are all in Italy.' Shouldn't this be accepted?
The pronunciation still disturbs me. "I-tal-e-a". Is that really correct?
Of course not.
Duolingo tends to translate names. Am I the only one who thinks, that non translated names should at least be accepted (e.g. Germania, Italia,... instead of Germany, Italy,... in the English translation) )?