portasen
Imperfecto de subjuntivo para el sujeto ellos/ellas/ustedes del verbo portar.

portar

Si todos se portasen igual que tú, no me quedaría otra que retirarme a los 40.
If everyone was like you, I would go into retirement in forty.
Dio los avisos oportunos para que pudieran trabajar y les recomendó que se portasen bien durante su ausencia.
He gave the appropriate pieces of advice so that they could work and he advised them to behave well during his absence.
Palabra del día
travieso