F assurance, 'confidence in themselves

1. 19. ils n'ont qu'à... E.B. 203, Obs. 2. Avoir. ..à is especially used in this phrase. Frequently of course the English 'have to' must be rendered by devoir.

l'ouvrir. An odd muddle. Evidently what is meant is s'en servir, i.e. delà clef. No mention has been made of the box to be unlocked, though the author is thinking of it.