单选题
Many retired people are hesitant to start a business of ______ because of the high risk involved.
A、
them
B、
theirs
C、
their own
D、
themselves
【正确答案】
C
【答案解析】
[解析] 语法：代词
1．这是一道词汇题，选项均为代词。
2．of one"s own表示所有，常在考题中出现。my own idea=an idea of my own
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