I would rather buy a house in the countryside than ______ in the city.
No sooner ______ on board the train than it started to move.
—I think everyone has a role to play in making the planet a better place. —Yes, indeed. ______.
Today the world is paying much more attention to, obviously, China says and does.
Advertisements _______ these facts have been printed in newspapers and magazines but have not helped much.
Responsibility is one of the top qualities parents want their children to have when they _______.