1.
Food (1) plays an important part in the development of nations. In countries where food is (2) scarce, people have to spend most of their time getting enough to eat. This usually slows down progress because men have little time to (3) devote to science, industry, government, and art. In nations where food is (4) plentiful and easy to get, men have more time to spend in activities that (5) lead to progress, human betterment, and enjoyment of leisure. The problem of (6) providing good food for everybody has not yet been solved. Many wars have been fought for the (7) right to go to war for food. Nations are beginning to put scientific knowledge to work for a (8) solution to their food problems. They work together in the Food and Agriculture Organization of the United Nations (FAO) to help hungry nations (9) produce more food.
2.
Without transportation, our modern society could not (10) exist. We would have no metals, no coal, and no oil (11) nor would we have any products made from these materials. (12) Besides, we would have to spend most of our time (13) raising food and the food would be (14) limited to the kinds that could grow in the climate and soil of our neighborhoods.
Transportation also (15) affects our lives in other ways. Transportation can speed a doctor to the (16) scene of a sick person, even if the patient lives on an isolated farm. It can take police to the (17) scene of a crime within moments of being notified. Transportation (18) enables teams of athletes to compete in national and international sports contests. In times of (19) disaster, transportation can rush aid to persons in areas stricken by floods, famines, and earthquakes.