I was told today that the rollover-programming wouldn't allow for individual rollovers depending on the context. Hence this frustration and I think we should report it until Duolingo decides to change their software-structure to accustom more individual needs.
Good luck with that. ;) The hints are like a dictionary, and we need to select which 'hint' (if any) suits the current sentence. When we figure out what Duo wants (grande = large, not huge -- huge is enorme) there is less frustration.