Grammar: “BE”: YES/ NO questions and short answers: e.g. 1>>> We’re teachers. [+] [?] Are you students? - No, we aren't. [?] Are you chefs? - No, we’re not. [?] Are you teachers? - Yes, we are. NB1: Don’t use contractions in [+] short answers! e.g. 2 >>> I’m a pilot. [+] [?] Are you a photographer? - No, I’m not. [?] Are you a pilot? - …