Unit 4 Where do you work? Lesson 20 课件（18张PPT）

Unit 4 Where do you work Lesson 20 课件3

Unit 4 Where do you work？ Lesson 22 课件（共21张PPT）

Unit 4 Where do you work Lesson 24 课件

Unit 4 Where do you work Lesson 23 课件

Unit 4 Where do you work Lesson 22 课件3

Unit 4 Where do you work Lesson 21 课件3