She is a teacher.	Is she a teacher? - Yes, she is.
He is a doctor.	Is he a doctor? - Yes, he is.
It is a book.	Is it a book? - Yes, it is.
They are pupils.	Are they pupils? - Yes, they are.
She isn't a driver.	Is she a driver? - No, she isn't.
He isn't a dentist.	Is he a dentist? - No, he isn't.
It isn't a pencil.	Is it a pencil? - No, it isn't.
They aren't sportsmen.	Are they sportsmen? - No, they aren't.
He is a businessman.	Is he a businessman? - Yes, he is.
She is a housewife.	Is she a housewife? - Yes, she is.
He isn't a worker.	Is he a worker? - No, he isn't.
She isn't a singer.	Is she a singer? - No, she isn't.
They are pilots.	Are they pilots? - Yes, they are.
They aren't dancers.	Are they dancers? - No, they aren't.