单项选择题After a bitter struggle the rebels were forced to submit.
单项选择题The steadily rising cost of labor on the waterfront has greatly increased the cost of shipping cargo by water.
单项选择题There is a trend towards equal opportunities for men and women.
单项选择题Efficient air service has been made available through modern technology.
单项选择题Customers are well waited on in this big department store.
