我市正積極開展"全國文明城市"創建工作，某中學在開展"崇尚節儉，愛護環境、文明做人"活動以來，取得了很好的效果，但還有極少數學生做得不夠好，在校園里依然還會出現一些不好情形。請你選擇以下現象中的幾種或全部進行描述，并就中學生如何"杜絕浪費，文明做人"提出至少兩點建議。
要點：
（1）不好現象：違反校規；浪費糧食；亂扔垃圾；在墻上亂涂亂畫；不關燈……；
（2）建議：吃光食物；離開教室記得關燈；主動撿起地上垃圾……；
要求：
（1）文中不得出現真實的人名、校名。
（2）語言通順，意思連貫，書寫規范。
（3）詞數80～100。文章的開頭已給出，不計入總詞數。
People in our city are working hard for building a national healthy city.But some middle school students don't have good habits in daily life.__________

【考點】說明文；環境保護．

【答案】People in our city are working hard for building a national healthy city.But some middle school students don't have good habits in daily life.For example，some often leave the taps on after washing their hands.In the dining hall，a lot of food can be seen left after the meals.What's more，we often find that waste paper is thrown everywhere，which makes others feel uncomfortable.In addition，some students like to write or draw on the wall or on the desk.As middle school students，we should develop good habits and stop wasting anything.We should save water and electricity.We should make good use of our school things.Don't throw food away.Let's do it from now on.