Mother mouse is bringing her children to look for food.Suddenly they hear the voice of a cat. The baby mice are very pregtened, and hide behind her mother. Mother mouse thinks it’s good chance to give the children a lesson. She says, “Don’t be afraid.” Then she shouts like a dog, “Guk, guk!Guk, guk!”When the cat hears the dog’s bark,he runs away at once.So mother mouse says to her children,”You see, it’s very important to learn a foreign language.”