Linda and Mary are good friends. They are both twelve years old now. Linda's birthday is on 9th September and Mary's birthday is on Teachers' Day. Their homes are both in Sunflower Estate(住宅区) but in different blocks(栋). Linda lives in Block 8 and Alice lives in Block11. They are classmates. They usually go to school together. They both like sports. But their favourite spots are different. Linda likes table tennis. Mary likes volleyball. Where are they now? Oh! They are playing basketball together in the playground now. How happy they are!