放学了，小明去上厕所。他刚走进厕所就听见流水的声音。于是她上前一看，原来水龙头没有拧紧。他想，我帮他关了吧！这样实在太浪费了。于是他就把水龙头关紧了。
After school, Xiao Ming goes to the toilet. No sooner had he entered the toilet than he heard the sound of running water. So she looked up and saw that the tap wasn't tightened. He thought, let me close it for him! This is a waste. So he turned off the tap.
可是后来，他又一想，会不会这样的事情还会发生呢？经过一番思考，终于想出了一个好办法。于是他从教室里拿出了一张纸，在纸上面写下了四个大字，节约用水。然后赶紧跑到卫生间把纸贴在了，水龙头对面的墙上，这才露出了笑脸
But later, he thought again, would such a thing happen? After some thinking, I finally came up with a good way. So he took out a piece of paper from the classroom and wrote four big words on it to save water. Then I ran to the bathroom and pasted the paper on the wall opposite the faucet, which made me smile