NewKingstonJa
QR will not eliminate you for not being able to speak any other languages than English.
They, like Emirates and Etihad Airways, have been recruiting in countries they don't fly to for many years. It's nothing strange about it. For instance, QR have been recruiting cabin crew in Bulgaria and Romania for as long as I can remember and they just recently started services there. Same with Argentina and Brazil in which they have been recruiting crew for probably over 10 years.
Good luck!