单项选择题
A．centuries B．too long C．some time D．many years
A．supporting the family while the wife is financial B．defending the family while the wife is running the home C．financial while the wife is running the home D．independent while the wife is dependent
A．Because they prevent traffic from being held up. B．Because they provide an easy way for the drivers to cross the road. C．Because they save money for the government. D．Because they save time for the pedestrians.