Jack met his old neighbour (邻居) Mary outside the library.

Jack: Hello, Mary. Are you studying in the library today?

Mary: No, I'm for a book for my little brother Sam. He's over there.

Jack: Wow! Is that Sam? How old is he now?

Mary: He's six.

Jack: I remember he was two years ago.

Mary: He's 1.3 metres now. He is much than before.

Jack: That's great!

Mary: He's 30 kilograms now.

Jack: Oh! He's than my little sister. She's five.

Mary: Really? Before, Sam at home. He was quiet.

Jack: How about now?

Mary: Now he is active. He every day. It is his favourite sport. He loves to , too.

Jack: Cool! I'm so happy to meet you and Sam. Shall we take a together?

Mary: Sure!