Tell the boy the news. He is to understand it.A. enough oldB. enough youngC. old enoughD.

Tell the boy the news. He is to understand it.
A. enough old
B. enough young
C. old enough
D. young enough

A. enough oldB. enough young(答案→)C. old enoughD. young enough解析：old年老的，旧的；young年轻的；enough足够的，做副词修饰形容词时，一般放在被修饰词的后面。句意：告诉这个孩子这个消息。他已经足够大，能理解了。结合语境可知选C。

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