单项选择题
A．We can do without railways. B．Trains have much in common with motorcars and planes. C．Motorcars and planes are not as good as trains. D．Trains are as good as motorcars and planes.
A．Someone spilled water on it. B．Someone lost it. C．It was made of low quality metal. D．The standard for measuring had changed.
A．Nancy should call the neighbors to complain. B．Nancy should introduce her children to the neighbors. C．Nancy should ask the neighbor’s son to babyish. D．Nancy should bring the neighbors a gift.