A. he could go out for a walk with his father B. he could help the father by going back and getting the other pair of shoes C. he could find out that his father had put on the wrong shoes 参考答案:C 答案解析:[解析] 文章第二段说,小孩告诉父亲他穿了一双错鞋,并且在第三段他父亲对此非常满意地说:“What a clever son I have got!”故本题答案为C。