填空题
A boy doesn't become a man at the same age everywhere over the (76) world. Many people in America felt that a boy becomes a man (77) since he is eighteen years old. It is difficult for an Eskimo boy. (78) An Eskimo boy becomes a man when he kills his first polar (79) bear. The polar bear, that may be nine feet long and weigh (80) 1,000 pounds, is a very dangerous animal. To kill one take a (81) lot of courage and skills. The boy who must kill a polar (82) bear developed the skills and courage. (83) Polar bears give the Eskimos meat for eat, skins for clothing, (84) and oil for heating and lighting. A boy who can provide all these things certain becomes a man. (85)