1. (2023高一上·宣城月考)  完形填空

Once upon a time, there was a shepherd （牧羊人）. He 1  dozens of sheep. He tended （照料）the sheep in the daytime, and kept them in the sheepfold （羊圈）at night.

One morning, the shepherd found that one sheep was 2 . His neighbor helped him check the sheepfold. "There is a hole in the wall of your sheepfold. A wolf went in through the hole, and took the sheep away at night. You should 3 the sheepfold quickly and fill up the hole," the neighbor said.

However, the shepherd was 4 to the neighbor's advice. He replied, "I have already lost the sheep. It is no 5 repairing the sheepfold." The next morning, the shepherd found that another sheep was gone.

The neighbor said, "If you had 6 my advice, you wouldn't have made the same mistake. Aren't you going to take action right now?"

The shepherd filled up the hole 7  at once. After that, 8  of his sheep was taken away by the wolf. 

If there is a mistake, we should 9  it as soon as possible. In this way, we can avoid more 10 .