Answer: There are actually two correct options (I'm a native speaker). Son and eran
Explanation:
Son is in present and eran is in past
Translated: lexema and morphem of the word: as
Sala de esperar
Pacientes
Médico
Enfermero(a)
Gripe
Síntomas
Receta
Farmacia
Catarro
Jarabe
Sala de emergencia
Ambulancia
I am confused about what you are asking for.
The right one is no puedo evitar