Ruby had just finished baking a pie and leaft it to cool. (пропущена буква i в слове finished, пропущена буква a в слове left)
A little later, it was suddenly gone. A trail of crumbs led under the sofa. (пропущена буква е в слове later, пропущена буква е в слове under)
There, Milo the cat was lying down, his whiskers covered in fish. (в слове lying нужно писать букву y, пропущена буква е в слове covered)
The pie was eaten, but Ruby sighed and smiled. From that day on, Milo got a new name — the pie thief. (в слове smiled нужно писать букву ed, в слове that нужно писать at)
Ответ: исправленный текст выше