根据短文内容，完成下列各题。
There once was a woman. She had a faithful (忠实的) dog. The dog was so faithful and she could leave her baby with the dog when she went out. ①并且她回来之后, 她总是会发现她的宝宝是安全的。
One day, the woman left the baby with the dog and went shopping. When she returned, she found something had taken place in the house. There were bloodstains (血迹) all over the bedroom. The woman then thought of her baby. She cried and started looking for him. Then she saw the faithful dog. It was licking (舔) its mouth. It seemed that it had just finished a delicious meal. The woman was angry and thought that the dog had killed her baby. Without thinking too much, she ②. _________________.
But as she continued looking for her child, she saw something else. Close to the bed, there was her baby and he was sleeping. And under the bed, there was a dead jackal (豺). The woman now understood what had happened. The dog tried to protect her baby from the jackal, but just now she killed the dog.