pay attention to the following to keep safe.
First, we ought to eat healthily and safely. Eating the food that goes bad will do harm to our health. Second, the safe in traffic is also required for most of our students rely on the public transportation every day. If we are in danger, we can call the police for help in time. We also have to be careful about the friends we make with especially online. What's more, we should be careful when we use electricity. Last but not least, it’s dangerous to swim in the river.
In short, safety must come first!