读句子，根据句子的内容把人物出现的顺序写在括号内。（每小题2分，共12分）

1. This is my mum. She is very beautiful.
2. This is my grandma. She is old (老了).
3. This is my father. He is a teacher.
4. This is my brother. He is a student.
5. This is my grandpa. He likes apples.
6. This is my sister. She is 2 years old.