问题详情：
One Sunday morning, Li Ming and his grandpa were feeded a bird in the cage. The bird was unhappy because it had enough food and waters. Li Ming didn’t know why.
The next morning on his way to the school, Li Ming saw some birds fly in the sky. Then he thought of the lonely bird in the cage. He decided to persuade his grandpa set the bird free. When he got home, he said to his grandpa, “Birds also need friends!” With his delight, his grandpa agreed him.
The bird was set free. Grandpa or the child were very happy to look the bird flying away into the sky.
【回答】
71. feeded→feeding 72. because→though rs→water
ol前去掉the →flying dpa 后加to →To
78. agreed 后面加with 79. or→and 80 look→see
知识点：其他
题型：短文改错
