阅读下列短文，根据上下文及空格中所给的单词首字母，填入一个适当的词，使短文意思完整。 Water is important for us. We drink it every day. We use it to cook and w 1 things. W 2 water, we can't live. Sometimes there is not e 3 clean water. In the future, it may be a big p 4 . So we should not w 5 water. What can we do? Use l 6 water during the daytime. Take shorter shower (淋浴). Five to ten m 7 enough. D 8 leave the water running for a long time. Try to s 9 every drop of water. That way, we can all have c 10 water for years and years.