题目内容：

____all her life to caring for the poor.Mother Teresa is greatly respected throughout the world.
A Having devoted B to devote
C Being devoted D Having been devoted
为什么选A?
sb be devoted to sth/doing sth 是固定搭配.而A项是现在分词的完成时态,这样一来讲不通啊

优质解答

其实devote的固定搭配有两个,一个是你说的sb be devoted to sth/doing sth,还有一个是直接用devote...to doing,表“致力于…”,不需要用devote的过去分词形式,选A是因为用现在分词完成时,表示动作发生在主句动词之前...