under his guidance ,people___themselves ____the liberation of their motherlandA devote ,to B devoted,into Cconcerned ,on Dconcerned ,into 为什么选A

问题描述:

under his guidance ,people___themselves ____the liberation of their motherland
A devote ,to B devoted,into Cconcerned ,on Dconcerned ,into 为什么选A

固定搭配,devote oneself to