高考英语单选题求解答_____atthewayhehadbeentreatedinthehotel,Johncomplainedtothemanager.A,HavingdisappointedB.DisappointingCDisappointedD.Todisappoint

问题：高考英语单选题求解答_____atthewayhehadbeentreatedinthehotel,Johncomplainedtothemanager.A,HavingdisappointedB.DisappointingCDisappointedD.Todisappoint

答案：↓↓↓

房少军的回答：

网友采纳　　解析：短语bedisappointedat表示“对什么失望”,用在句首省掉be动词.　　答案：C