Unit 4 What does your mother do? [00:02.39]第四单元 你妈妈做什么的? [00:04.78]Lesson 19 Just speak [00:07.07]第十九课 刚才的谈话 [00:09.35]Look,Gao Wei! [00:10.83]看,高伟! [00:12.30]That is my mother,She is on TV. [00:14.

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