She is _______(致力于) to caring for the sick and needy in her spare time.
问题描述：
She is _______(致力于) to caring for the sick and needy in her spare time.
答案是devoting还是devoted.
答
选devoted.怎么解释？ 谢谢！devoted 为形容词， “投入的”be devoted to (doing) sth. 致力于做某事这个句子为: 在业余时间, 她都投入在关怀病人和穷人的工作中.