By the middle of the 21st century, the vast majority of the world’s population _____ in cities rather than in the country.
— They have discussed the problem for hours. — Have they come to any_____?
—Where _____ Mary have put the empty bottles? — She _____ them away. They must be somewhere.
He failed in the exams and only then _____ how much time he had wasted.
This ticket _____ one adult and one child to the show.
— Isn’t it hard to drive downtown to work? —Yeah, that’s why I ______ to work by train.