Поставить предложения в отрицательную и в вопросительную форму 1)pat is a singer 2)i am a doctor 3) he is a good boss 4) i am eleven 5) they are at home

1.Pat isn't a singer. -Is Pat a singer? 2.I am not a doctor. -Who is a doctor? 3.He isn't a good boss. -Is he a good boss? 4.I'm not eleven. How old are you? 5.They are at home. Are they at home?