Сделай предложение вопросительным или отрицательным i have flown by plane (вопросительное) the secretary has written some letters to our customers (отрицательное) philip has just signed the contract (вопросительное) we fave seen this film (отрицательное) jack has never been to liverpool (вопросительное)
the secretary hasn't written
has Philip just?
we haven't seen this film
has Jack never been liverpool?