6 the boy's poor health ---------his parents a great deal()A was concerned B concerned at Cconcerned D concerned about
问题描述：
6 the boy's poor health ---------his parents a great deal()A was concerned B concerned at Cconcerned D concerned about
答
C concerned句中的concern是及物动词,后面直接加宾语,不能在加任何介词,排除B Dconcern是使动用法~不需要加was,排除A. 只有当concern是形容词时,才有be concerned这种说法.而concern 当动词表示担忧,关心时没有Someb...