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- 00:00 免费1、Lesson 1 I'm not feeling wel ...
- 00:00 付费2、Lesson 2 Did you play basket ...
- 00:00 付费3、Lesson 3 Did you go boating ...
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付费4、Lesson 4 What did you do las ... - 00:00 付费5、Lesson 6 Is there a library ...
- 00:00 付费6、Lesson 7 Where do the tigers ...
- 00:00 付费7、Lesson 8 Who are you going t ...
- 00:00 付费8、Lesson 9 I helped a deaf man ...