A long time ago, there was a young man. He kept some (sheep). One morning, the man found that one of his sheep (be) missing. There was a hole in the fold (羊圈), the wolf could come in and take away the sheep. The man's neighbor advised him (fill) the hole. But he (not listen) to him. He thought there was no need to do so since the sheep was already (lose). However, that night, the wolf (come) again and took another sheep. The next morning, the man found that another sheep was missing. He was very (sad) but thought it was not too late to fix the fold. So he (quick) went to repair it. From that day on, he never lost another sheep.
The story (tell) us it's never too late to make a change. Everyone makes mistakes, but we will get better as long as we learn our mistakes.