87，The university authorities did not approve the regulation,____(也没有解释为什么): and they didn’t explain the reasons, either. 昂立教师
88，Jane is tired of dealing with customer complaints and wishes that she_____(能被分配做另一项工作)：could be assigned to do another job. 昂立教师
89，John rescued the drowning child_____(冒着自己生命危险): at the risk of his own life.