Everyone of us has many responsibilities us．So we must work hard．
A. attaching
B. attaching to
C. attatched with
D. attatched to
网友回答
A. attaching
B. attaching to
C. attatched with
(答案→)D. attatched to
解析：考查固定短语。句意“我们每个人都肩负很多责任。所以我们必须努力工作。”attatch“附加，系”，常与介词to连用；与responsibilities之间是动宾故选，故用过去分词作后置定语。故选D。