阅读下列短文，根据短文内容填空。在未给提示词的空白处仅填写1个恰当的单词，在给出提示词的空白处用括号内所给词的正确形式填空。

One day, I saw a boy walking along George Street with an armful of books. I thought （1） myself, “Why would he carry all his books? ” Just then, some kids ran at him, （2） （knock）his books out of his arms. His glasses went flying and landed in the grass. My heart went out to him, and I （3） （jog）over to him. As I handed him the glasses, he looked at me and said, “Thanks!”