根据首字母写出单词
Swimming is very popular in summer.People like swimming in summer because water m--- people feel cool. If you like swimming and swim in a wrong place ，it may not be safe.Last summer, more than ten people died w---they were e---themselves in the water ,and many of them wre students.But some people are s---not careful in swimming. They often think they swim so well that n---can happen to them in water.Summer is here again,if you go swimming in summer ,don’t forget that better swimmers have died in w---.They d--- only because they were not c---,not because they could not swim.