Water is so important in our life. Without water, the earth will be a world with no lives. But the world is in great need of water now. About three billion people in the world don’t have enough fresh water. And 70% of the cities in China are short of water. However, so much water is polluted and wasted every day. We must do something to save water and keep our water clean. We shouldn’t pour garbage into lakes or rivers. And we can save water by changing our lifestyles. For example, we can reuse water. Let’s take action together to make the world a better place.