根据短文内容和首字母的提示，把所缺单词填写在短文后面的横线上。

     Most of us have probably been angry with our friends, parents or teachers. Perhaps they said (1)s           

 you didn't like, or you felt they were unfair. Sometimes, people can (2)s            angry for years about a small

problem. Time goes by, and good (3)f            may be lost.

    When we are angry, (4)h           , we are usually the ones affected. Perhaps we have seen young children

playing (5)t           . Sometimes they have disagreements and decide not to talk to each other. But this usually

does not last for long. This is an important lesson: we can (6)s            a problem by learning to forget.