they had to
Ils savaient qu'ils devaient combattre ensemble pour défaire l'ennemi commun.
They knew they had to fight together to defeat their common enemy.
Ils devaient être deux, pensai-je.
There must have been two of them, I thought.
Ils devaient être en train de lire ou alors ils s'étaient endormis.
They must have been reading, or else they had fallen asleep.
— Die My Love (2025)
Pour se laisser diviser, ils devaient être bien médiocres.
To let themselves be divided, they must have been quite mediocre.
— Hero (2002)
Le maire commanda aux citoyens comment ils devaient agir.
The mayor ordered the citizens how they should act.
Ils savaient qu'ils devaient s'échapper.
They knew they had to escape.
They were supposed to leave this morning.
— Maman, j'ai raté l'avion ! (1990)
Ils devaient trouver le meilleur candidat possible.
They had to find the best possible candidate.