泽熙美文为进一步增强中学生的安全意识，提高自我保护能力，某校开展了以“安全”为主题的英语演讲比赛。请你根据以下中英文要点提示，简要写一篇英语演讲稿。
写作要点：
写作要求： 1. 80词左右（开头和结尾已给出，不计入总词数）；
2. 文中不能出现真实的校名和人名，否则不得分；
3. 写作要点都必须用上；紧扣主题，适当发挥。
参考词汇：be careful, It’s dangerous to … , online, call … for, eat healthily, remember not to …
How to keep safe?
As teenagers, we should always keep safety in mind. But how can we keep safe? Here are some of my suggestions. First，we should be careful when we make friends. It’s dangerous to make friends online. Second, if we are in trouble, we should learn to call the police or others for help in time so that we can keep ourselves safe. Also，we need to eat healthily and safely. What’s more, eating healthy food is very important to our health. Finally, summer is coming, and remember not to swim in the river.
In short, safety must come first!
