Unit 4 January is the first month Lesson 23 课件（19张PPT）

Unit 4 January is the first month Lesson 24 课件

Unit 4 January is the first month Lesson 19课件（18张PPT)

Unit 4 January is the first month Lesson 21课件

Unit 4 January is the first month Lesson 20 课件（18张PPT)

Unit 4 January is the first month 课件(共14张PPT)

Unit 4 January is the first month Lesson 24课件（16张PPT)