Successful businesses evolve by staying the changing market and choosing the right time to move from their existing business model to a new model.

Is there a bus to the downtown? — There _____ be, for it is too late now. You’d better take a taxi. [ ]

Is everyone out of the fire—No, _______ two men are still in the burning house.

China ______ many foods ______ Iraq during the war.

He leave he finished reading the magazine.