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)

87.and didn’t explain the reasons either

88.could be assigned to do another job

89.at the risk of his own life