单选题
This hard-working couple was able to put their two sons through college on {{U}}their own{{/U}}.
A. by their own efforts
B. in their own way
C. in their own interests
D. in their own light
A
B
C
D
【正确答案】
A
【答案解析】
on one's own：独立地，靠自己的努力，与by one's own effort意义接近；in one's own way：以自己的方式；in one's own interest：为了自身的利益；in one's own light：以自己的眼光
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