Swimming is very popular in summer. People like swimming in summer because water makes them1cool. If you like swimming but swim in a2place, it may not be safe. These years, more than ten people3while they were enjoying themselves in the water and4of them were students. But some people are5not careful in swimming. They often think they swim so6that nothing can happen to them in water. Summer is here again. If you go swimming in summer, don't forget7better swimmers have died in water. They died because they were not careful, not because they8swim. So don't get into water when you are alone.9there is a "No Swimming" sign, don't get into water,10. If you remember these, swimming will be safer.