【正确答案】Tips, Words and Expressions
Water shortage is getting increasingly serious as population and consumption increases. We need to find ways to address the problem. / Recycling water can help reduce the amount of water we actually use, e.g. reuse waste water produced by washing ... / The price of water is too low now, so low that some people don't care to save water. / Raising water prices can force people to save water and may make them more aware of the value of water. / With limited amount of fresh water, we are bound to make use of sea water one day. / We should develop technologies to desalinate sea water to make it affordable.