单项选择题
He felt cheap about rushing to get in line before the old lady carrying heavy parcels（）.
A．felt inferior and ashamed B．felt not worthwhile of doing something C．felt bad about doing something D．felt unhappy about doing something
单项选择题 Columbus had accomplished one of the most amazing and courageous（）in history.
单项选择题 Although his people did not（）his efforts, he kept trying.
单项选择题 If you think her experience is（）, we will employ her.
