"You rarely eat dinner separately."
Translation:Voi rar mâncați separat cina.
you give "Tu rar mănânci cina separat" but also say "Voi rar mâncați separat cina". Why the inversion of word order between tu and voi ? I gave: voi rar mâncați cina separat which has the same word order as the first correct answer and should be accepted. In any case one person could hardly eat dinner any other way but separately unless you state separately from someone.
As far as I can tell, the ”eat dinner” versus ”eat the dinner” question is peculiar to English - and mostly applies to food. Romanian uses the definite article in the same way you would use the article in English to speak of most other things: I pet the dog, You take the book etc. So, if anything, English has the special rules on articulation! :)