Дайте краткий отрицательный ответ. example: 1. is your brother a student? (an engineer) - no, he isn’t. he is an engineer. 2. is mary an actress? (a secretary) 3. are you an architect? (an artist) 4. are paul and john schoolboys? (students) 5. is your father a singer? (a teacher) 6. is your aunt a librarian? (a nurse) 7. is your uncle a teacher? 8. are your sisters dancers? (singers) 9. is your son a student? (a worker) 10. are you school teachers? (mechanics) 11. are you a doctor? (typist) 12. is your mother a nurse? (a doctor) 13. are you engineers? (officeworkers)