陈秀玲

from my perspective , it is very necessary to improve the safety knowledge of security personnel and students . both of them should be responsible for it .

陈秀玲

回复 6# 吉祥猪


    "tolden"改为“told”，过去式和过去分词都一样的。er```````maybe the students who are in your school now should pay more attention to it .

陈秀玲

回复 8# 吉祥猪