人教版新目标七年级英语上Unit2《This is my sister.》教学视频

精讲课1https://v.qq.com/txp/iframe/player.html?vid=u0313n83zvy&auto=0

精讲课2https://v.qq.com/txp/iframe/player.html?vid=b0327f76eab&auto=0

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