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? - …

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