短文改错（共10 小题，每小题1分，满分10分）
My brother Tom was very selfish when he was 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,
that I couldn’t find. Then he ate it all by himself. He never helped other. He said he is busy.
In other words, a game of tennis made him very busy. He did not care if something that he did
it made people angry. For instance, one night he played strongly and loud music till four o’clock
in the morning. But he is difference now. He often helps grandma with houseworks, helps mom
with cooking and helps his classmates with their lessons.