mercy [ˈmɜ:sɪ] ( pl mercies ) noun 1. (uncountable noun) [kindness, pity] pietà f at the mercy of (fig) alla mercé di 2. [blessing] fortuna f
Complétez la séquence avec la proposition qui convient. We're late, we … take a taxi to catch the plane! don't have to have to mustn't