(单选题)

When the boy finally told his father that all the nails were gone, his father ______.

A.took him to the fence and looked at the holes

B.asked him to pull out one nail of the back of the fence

C.asked him to focus his enemies on excuses

D.told him that the fence was the same as before

参考答案：A

参考解析：

细节理解题。根据文章第九句“The father took his son by the hand and led him to the fence”和第十句“You have done well, my son, but look at the holes in the fence”可知，当这个男孩最终告诉他父亲，所有的钉子都不见了的时候，他父亲把他带到栅栏那里，看了看那些洞。故选A。

知识点：