用方框中所给单词的适当形式填空，使短文通顺、正确、连贯（每个单词限用一次）。
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School is where we learn, make friends and grow up. But 小题1: happen daily in schools across the world. We hear reports of students falling from the buildings while 小题2: windows. Other students are hit by football on the playground. Three years ago, some students fell down on the stairs and were stepped on by 小题3: , with tragic results.
We feel 小题4: sorry for the loss of lives. There is 小题5: we can do to bring the students back, but we can try to prevent such things 小题6: happening again. You should do the following things to prevent a stampede（踩踏）.
After class or school, don’t rush out at the same time. Wait until there are 小题7: people trying to leave.
*When you walk with a crowd of people, stay alert（警惕的）and 小题8: your steps. Don’t play around.
*Be familiar with your 小题9: and learn where the safety exits are.
*When there’s pushing and squeezing（挤）, don’t move and try to hold on to something.
小题10: stay in a corner until the crowd leaves.
