47. c Do you want to go to Paris, Washington, Tokyo? Bel Air will take you there, at all times of the day or night, right through the week.
48. B we fly two or three times a week to towns and cities in the very heart of Asia, Africa and South America.
49. C Bel Air 是最洞闭好的
50. B 应该是为厅颤答Bel Air做的扮慧广告。
47, C every day of the week
48. B two or three times a week
49. C no other airline is better than Bel Air
50. B persuade people to fly with Bel Air