After retirement, she herself in the poor children.
A. occupied, helping
B. occupied, to help
C. devoted, to help
D. devoted, helping
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(答案→)A. occupied, helping
B. occupied, to help
C. devoted, to help
D. devoted, helping
解析：考查固定搭配。固定搭配devote…to sth/doing sth致力于sth/做某事；其中的to是介词，后面要接名词或者动名词的形式。句意：退休以后，她致力于帮助那些贫穷的孩子。故A正确。