学进去

One winter afternoon, a little mouse goes out ______ a walk . Suddenly the little mouse sees a hole(洞). He thinks it ______ his friend’s house. ______ he goes into it.

To his surprise(吃惊), it isn’t a mouse’s ______ but a snake’s. The snake(蛇) is ______ there. The little mouse is afraid and runs ______.

After the little mouse goes home, he tells his father about it. His father says, “Don’t ______ afraid. The snakes are our enemies(敌人), but they won’t catch us now. It’s time ______ winter sleep. During the winter sleep, snakes never catch or eat anyone.”