根据句子意思和所提供的首字母(或首尾字母)填写单词(你所填写的应该是完整单词)。 5.I__________ people do things without thinking. 6. My children are very b_______. They get good grades in school. 7. Athletes are often very c_________.They try hard to win. 8. She is a very p________ person. She doesn't talk about herself very much.