你好。答案是D。动名词做主语。如果选C的话,应该是:Injured in the leg,he is unable to walk home(分词结构做伴随动作).== As he is injured in the leg, he is unable to walk home(原因状语从句)
——in the leg made it impossible for him to walk home
A to be injured B having injured C injured D being injured
选D。be doing作主语
而且表示被动
D 腿部被弄伤,使他不能走路回家。 being injured,被动语态做主语。
D
因为伤了左腿他不可能步行回家。