短文改错（共10小题；每小题1分，满分10分）
假定英语课上老师要求同桌之间交换修改作文，请你修改你同学写的以下作文。文中共10处语言错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号（^），并在其下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1. 每处错误及其修改均仅限一词；
2. 只允许修改10处，多者（从第11处起）不计分。
Our government is trying hardly to build an energy-saving society. It is everyone duty to help reach this goal.
However, not everybody have realized the importance of it. For example, sometimes lights and computers are still on after the classes. Some students even forget to turn off the tap after using it and have water running all the time. Usually only one side of our paper is used, caused much waste.
It’s time we do something to avoid this kind of waste. Remember to turn off the tap immediately after using it. Make sure that all the lights and other electric facility are turned off when we leave the rooms. What’s more, paper should be printed and written on both sides.
In a word, if everybody has the aware of reducing waste and saving energy, we can contribute our society.
