C001 UNIT 1: Back to School【单词】
#1UNIT 1: Back to School【单词】
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UNIT 1: Back to School【单词】
Lesson 1: Back to School
Lesson 2: What Do You See?
Lesson 3: What Do You Do?
Lesson 4: Washroom and Library
Lesson 5: Gym and Playground
Lesson 6: Open and Close