Bonjour aider moi svp c'est en anglais merci d'avance !!! Capacity or obligation = say the opposite ( changing a negative form into an affirmative form and vice versa ) 1. You were not able to do it = 2.you could do it = 3.you're not able to do it = 4.you had to do it = merci de bien vouloir m'aider ;)