...your father a teacher?-No,he ....a doctor.
He .....not an engineer,he .....a doctor
That book ...not very interesting.
The book......on the table.
London .......the capital of Great Britain.
......you students?
Форма глагола TO BE

is your father a teacher?- no, he is a doctor. he is not an engineer, he is a doctor.they book is not very interesting.the book is on the table.London is the capital of Great Britain.are you students?