【正确答案】There was once a man who kept a flock of sheep. One morning, he was about to herd them when he noticed that one sheep was missing. Upon examination, he found a hole in the sheepfold. Obviously, it was a wolf that got in and took the sheep away at night. His neighbor advised him to fix the sheepfold, but he didn’t listen. The next day, he found that another sheep had been stolen by the wolf through the hole. Then he remembered his neighbor’s words and hurried to mend the sheepfold by plugging up the hole. From then on, no sheep was lost ever again. This story tells us that when something goes wrong, we can prevent bigger losses by doing something about it in time.