What is known to all is that up to now China has made a great___________ to preserving the peace.
People in those days liked to believe in computers ________ the world.
________ into use in April 2012, the hotline was meant for residents reporting water and heating supply breakdowns.
-- Hey, Mary. Is the film ________?-- Hi, Tom. I think the film is ________.
Tom, our manager, ________ for American in two days and he has asked me to find out when the earliest plane ________ next Sunday.
________, we are better off and live a more convenient life.