短文填空：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 m____ of them were 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 swummers have died in w___ .They d___ only because they were not c___ ,not because they could not swim .Sodon't get into water when you go swimming y___ ,go with your teachers or your parents .If there are "NoStudents " sign ,don;t get into water,either .If you r___ these ,swimming will be safer.