单选题
When he was a young man, he traveled about the world ______.
A、
on its own
B、
of its own
C、
on his own
D、
of his own
【正确答案】
C
【答案解析】
该句意为“年轻的时候，他曾经独自一个人周游世界”。on his own原形为on one's own，意为“单独地，独立地”，of one's own“自己的”，根据题意，选项C正确。
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