阅读下面材料,在空白处填入适当的内容(1个单词)或括号内单词的正确形式。
According to a recent survey, violence (暴力) did exist in schools. Students showed their fear and parents and teachers also 10 (express) their great concern about it. Experts hope 11 whole society should pay more attention to the psychological health of teenagers.
Nowadays, school violence is a hot topic. I think this is a phenomenon(现象) , which 12 (call)for our great concern. We should make every effort 13 (prevent) violence happening at school for more and more students would drop out of school if their personal 14 (safe) could not be guaranteed(保证). In fact, violence can be learned. 15 (actual), children learn violent behavior from adults or from 16 they see on television or on the Internet.
If I meet with school violence, I will not answer violence with violence, for it will result in 17 (much) fighting. I will tell my teachers and parents about it. I think they will help me deal with it well and they will protect me 18 the bad guys.
All in all, we students should behave 19 (we) and keep away from violence.