87，The university authorities did not approve theregulation,____(也没有解释为什么)
88，Jane is tired of dealing with customer complaints and wishesthat she_____(能被分配做另一项工作)
89，John rescued the drowning child_____(冒着自己生命危险)
90. George called his boss from the airport but it__________________(接电话的却是他的助手)
91，Although he was interested in philosophy,______(他的父亲说服他)majoring in law。

答案：
87.and didn’t explain the reasons either
88.could be assigned to do another job
89.at the risk of his own life
90.turned out to be his assistant
91.his father talked him into