bonjour j'ai un exercice pour aujourd'hui svp le voici: Complète les phrases suivantes avec could / couldn't ou had to selon le sens. a. Slaves ... work hard and they ... obey their masters b. Slaves ... hide to learn to read and write if they ... find someone to teach them. c. People ... help runaway slaves but they. be careful. d. Harriet Tubman ... run away to escape her master e. Young slaves ... see their parents every day.