单项选择题
A．Quit smoking. B．Loose weight. C．Have a talk with the doctor. D．Weigh himself frequently.
A．All the money on advertising was wasted. B．Not all the advertisements were well designed. C．All the managers knew about advertising then. D．Managers spent no money on advertising.
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.