Actually, over 60 percents of the world s 580 million older people live in developing countries. An increasing number of people in these lands are reaching old age【C1】______better health care and improvements in sanitation, housing, and【C2】______. Older people make【C3】______contributions by doing work for which they are not paid.【C4】______, an estimated 2 million children in the United States are being【C5】______by their grandparents, with 1.2 million of them living in their grandparents home . Thus older people provide shelter, food, and education and carry cultural【C6】______to their grandchildren while enabling mothers and fathers to continue as members of the work force.【C7】______, in the industrialized world, many volunteer organizations would not【C8】______without the contribution made by older people. They are also much - needed【C9】______. In some developing countries, where【C10】______30 percent of the adult population have contracted AIDS, older people care for their infected adult children after whose death they will have to raise their grandchildren. 【C1】