听录音，根据所听内容补全下列短文（每空格填一词）。

Water is very important for us. It is everywhere us. We use water to wash, cook and do many things. We can't without water. In hot or after exercise, we need more water. But in some , it isn't often and there isn't much water. Not every knows this. So let's make a speech for them and them to reuse and save water.