It`s hard to believe that it was twenty years since we left school!这句话那里有错误?谢谢急

was改为has been 因为后面是since引导的时间状语从句,所以用现在完成时There seems to still some familiar face here,and most may have become strange to each other.Thisreunion is real a good chance for us to stay together again and callback what we spent in school. We are luck to have aspecial guest,Mr Zhou,our former head teacher,will give us a speech beforedinner,reviewing the past of us classments in school.那里有错误啊！谢谢啦每一行有一个错误谢谢急急1.face加s,因为face是可数名词 2.and改为but 3.real改为really4.have与aspecial之间加an 5.will前加who6.reviewing改为review 希望您满意我的答案