Five years later, he returned home, his character greatly .A. changedB. changingC. having

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(答案→)A. changed
B. changing
C. having changed
D. was changed
解析：考察独立主格结构。因为在两部分之间没有连词，说明后一部分不可能是句子。如果是句子，需要有连词连接。则使用独立主格结构his changes greatly changed.因为changes与change构成被动关系，则使用过去分词的形式。故A正确。