根据材料内容，选择正确答案。

A

    It's John's birthday today. He's five years old. He gets many presents from his family and one of them is a nice big drum. "Who gives him that drum?" his father asks. "His grandfather," answers John's mother. John likes his drum very much. He makes a terrible noise with it, but his mother doesn't say anything about it. His father is not at home. He's working in a school. So he doesn't hear the noise. But one of the neighbours doesn't like the noise. So one morning, she takes a knife and goes into John's room. John is making a noise with the drum. She says to him, "Hello, John. Do you know there is something very nice in your drum? Here is a knife and let's find it."