Ⅰ.教材活用——根据课文内容完成下面的短文
Li Ning was called the prince of gymnasts，who retired 1.____ the age of 26.He was chosen as one of the greatest sportsmen of the twentieth century.Although he had won everything it was possible to win in his sport，Li Ning retired with the feeling 2._____ he had failed.He was 3.______________ (disappoint) because he had not performed well in the 1988 Seoul Olympics.
