题目内容：

该文中共有十处错误,每句中最多有两处,错误涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号（∧）, 并在此符号下面写出该加的词。

删除：把多余的词用斜线（ ＼）划掉。

修改：在错的词下划一横线, 并在该词下面写出修改后的词。

注意：1、每处错误及其修改均仅限一词；

2、只允许修改十处, 多者（从第11处起） 不计分。

My brother Tom was very selfish when he was a little boy.  He did not want share things with other people.  For example, when he bought a chocolate cake, he put them in a secret place where I couldn’t find .  Then he ate it all by himself.  He never helped other.  He said he is busy.  That is, a game of tennis making him very busy.  He did not care if something he did made people angry.  For instance, on one night he played strong and loudly music till four o’clock in the morning.  But he is difference now.  He often helps grandma with housework, helps mom with cooking and helps his classmate with their lessons.