B
Long ago, three pigs grew up and left their parents' home. They said goodbye to each other and went their separate ways.
Each little pig decided to build a house. The youngest pig was lazy and he thought, "I will build my house with grass. It is light and easy to build with." The middle pig thought, "Here are many small sticks. They are easy to work with. I will build my house out of sticks." The oldest pig worked hard and always thought before doing things. "There are many dangers(危险)in this world. I must build a strong house out of stones," he thought.
And soon, the three pigs built their houses. One day, a big wolf(狼)came to the town. He was very hungry. He saw the first little pig in his grass house. He pushed down(推倒)the house and ate the little pig. Then the wolf came to the stick house and pushed it down, too. Then he ate the second pig. When the wolf came to the stone house. He pushed it again and again. But he couldn't push it down. In the end, the wolf gave up and went away. The oldest pig lived a long and happy life.
①The oldest pig built his house.
②The wolf gave up and went away.
③The wolf pushed the grass house down.
④The three pigs left their parents' home.
⑤The wolf ate the middle pig.