单项选择题
A．he was quite sure of success B．he was not sure he would get the umbrella back C．he was rich enough to afford a new umbrella D．he did not know what to do
A．A news item. B．A public announcement in the press, on TV, etc. C．One way to voice one's view. D．Public opinions.
A．a useless advertisement B．how to make an effective advertisement C．how the man lost and found his umbrella D．what the merchant did for the umbrella owner