Language in a surviving Roman Empire?

If the Roman Empire survived to modern times, what would be the predominant language(s)?
Also, is it possible for 1 language to be spoken through the entire empire?
 
Some form of modern Latin most likely
I think Latin in a surviving Roman Empire might end up like OTL's Chinese. A bunch of different dialects that are often different enough to be considered separate languages all lumped under the umbrella of Latin, with a standardized Latin language being the lingua franca, similar to Mandarin. That's not even factoring in Greek or Coptic, which would be major languages in a surviving Roman Empire assuming it had the borders it had at its peak.
 
A surviving Roman Empire is more likely to be the ERE. So Greek.
this even though in reality it would be a the dialects that would slowly die off ( once standardization comes) with other major language families ( depending of the pod) mainly the slavic ones and armenian
 
WRE/No division of Roman Empire in 395 modern Latin would be major language but probably there would be standard Latin and several local Latin dialects which are not really intelligeble (compare to OTL Artabic). And fully unified Roman Empire Greek would be number two but even that would has same thing what Latin would has.

If it is just surviving ERE, definitely Greek. But there would be too Turkish on parts of Anatolia and some other languages depending how large ERE would be.
 
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