阅读短文，将所给的词填入文中恰当的位置，使文章完整通顺。

    Once upon a time, there was a dog. He guarded (看守) houses for a family. He had food every day. He was . One day, a wolf . "I'm hungry. I can't find ," said the wolf. "Come and help me," said the dog. "Help me, and the owner (主人) will you food every day."

    The wolf the dog. He said, "I won't go with you. Because I like freedom (自由)."