问题描述：
The little boy wants to get a job ____ radio when he grows up.A.on B.from C.at D.of
The little boy wants to get a job ____ radio when he grows up.A.on B.from C.at D.of
The little boy wants to get a job ____ radio when he grows up.A.on B.from C.at D.of
问题解答：
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