Образовать вопросительные и отрицательные формы предложения ( к каждому предложению два ответа и вопросительный и отрицательный ) 1) they are my friends 2) she is are sister 3) tom is a dentist 4) kate is a nice girl

Are they my friends?
they are not my friends

is she a sister?
she isn't a sister

is Tom a dentist?
Tom isn't a dentist

is Kate a nice girl?
Kate isn't a nice girl