故事复述 — 英语填空题

阅读小故事并填空复述：Tom found a little bird. It couldn't fly. He took it home and looked after it. Days later, the bird could fly, and Tom let it go. 根据故事内容，用恰当的词补全复述：Tom found a little ___ that couldn't fly. He took it home and looked after it. Later, the bird could ___, so Tom let it ___.