You can’t borrow books from the school library ______ you get your student card.
— Who is absent from the lecture today? —_____________you ask? Peter, of course.
— Finished? — No, I’ve got __________________three questions to answer.
Brian was about to_______________ when he suddenly found an answer to the question.
It would seem to be a general truth__________ nothing is as straightforward as it at first seems.
At this time next week ______________ the English Channel.