【正确答案】 1、on,    2、up    

【答案解析】解析： People throughout（全部） the country were called on (be called on被要求做某事，义不容辞)to take up（开始从事）the struggle for（为…努力） their own freedom（自由）. 全国人民都要求采取行动为自己争取自由的斗争