He didn't come on time, __________ it impossible for us to hold such an important party.
—Hi, Mary! Do you know where Jim is?— I think he ________ a lecture in the library.
— Are you sure you won’t come for a drink with us?—_____, if you insist.
They must have been enjoying themselves there, or they _____ so long.
_____ and you will break the world record.
— Where did you live as a child?—— A village _____ by hills on three sides.