This is a photo of Mr. White's family. The man with glasses   is Mr. White. The woman is Mr. White's wife. They have a son and a daughter. The son is behind (......) Mr. White. His name is Tom. He's 13. Kate is Tom's sister. She is 11. Tom and Kate are in the same school, but they are in different   grades. Tom is in Grade Three and Kate's in Grade One. They are good students. ,.(2) Tom and Kate are  _  .
good children good students in different schools in the same grade