单项选择题
A．some examples of shoot in US schools B．the American’s feeling C．some famous schools D．that some teachers were killed by students
A．means nothing B．concerns others C．concerns only the artist D．concerns all the people in the world
A．Some companies in the United States moved to Sweden, Germany and Belgium. B．Fresh air, spacious room and being away from others attract people to move to the suburbs. C．People wouldn’t pay tax when they moved out of cities. D．The neighborhood should be maintained by old and poor peopl