【正确答案】：
Water is so important for all living things. Without water there can be no life on earth. All animals and plants need water, including human beings. However, nowadays there are many people who waste a lot of precious water.
There are many places in the world still running out of water.So we should try our best to save water on earth. There are many things we can do. First, make sure that the kitchen sink tap is not running when you help wash the dishes．Second, we can collect water while we are washing our hands to reuse it later. Third, we can paste a note on the wall of the washing room to remind people of turning off the tap after using it.
All in all, everyone should participate in the action of saving water, which will make our planet healthier and more sustainable.
【题目解析】：观点题，第一段先写现象，点出节约用水的原因。第二段写节约用水的原因。第三段呼吁大家共同努力。要注意结构要清晰，分点阐述时用First，second, third等词汇，增强文章的逻辑清晰度。注意记忆表总结的词汇，all in all， in conclusion等