根据短文内容，选择正确的答案，将编号写在题前的括号里。

It's Saturday afternoon. It's raining heavily. Mary and her family are at home. Mary and her father are in the living room. Mary is making a model train and her father, Mr Harris, is reading a book. They are also talking with each other. Mary s little brother Jim is in the living room, too. He is 5 years old. Sometimes he puts Mary' s pencil under the chair. Sometimes he cuts Mary's paper into pieces (碎片). He is a reallynaughtyboy. Mary' s sister Alice is playing computer games in her bedroom. She is very happy- She sometimes plays computer games all day. Mary's mother, Mrs Harris, is in the kitchen. She is making some tea and biscuits for the family.