Around the world, people are looking for new, longer-lasting sources of energy. One of these sources is the wind. Using wind turbines to generate electricity creates no air pollution and requires no fuel. Besides, wind is free! Building a turbine or mill costs money, but the wind itself costs nothing. In addition to being free, wind is ＿＿（14）＿＿ . We won't run out of wind the way we will run out of coal, oil, or other fuel sources. In fact, the power that wind can create is much greater than the power that the world’s current energy consumption needs. And the power can help people or small communities be ＿＿（15）＿＿ . They would rely only on their turbine, not a city power grid. The key to making wind power work seems to be building more and better turbines. If we do that, it seems likely that wind power will be more and more important in our future.