The Chinese boy is Li Lei. He's thirteen. He's in No.3 Middle School. He's in Class Two, Grade One. His good friend is Jack. He's English. He's in Li Lei's school. He's in Class One, Grade Two. Mrs. Read is an English teacher in their school. She is an English woman and she teaches Grade 3. Jack and Li Lei have a secret . Jack is their English teacher's son. How old  is Jack?
He is twelve. He's not twelve. Sorry, I don't know. He's thirteen.