点击展开目录，进入板块学习
Unit 6 When was it invented?
Section A
作业一
Section B
作业二
Unit 7 Teenagers should be allowed to choose their own clothes
Section A
作业三
Section B
作业四
Unit 8 It must belong to Carla.
Section A
作业五
Section B
作业六
Unit 9 I like music that I can dance to.
Section A
作业七
Section B
作业八
Unit 10 You’re supposed to shake hands.
Section A
作业九
Section B
作业十
第十二讲 暑期课程回顾+结课测试
【Units6-10基础知识梳理】
作业十一
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