部编鲁教五四学制八年级上册Unit 8 I’ve had this bike for three years.Section A 3a-3c.优质课教学视频，山-一点通教学网

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部编鲁教五四学制八年级上册Unit 8 I’ve had this bike for three years.Section A 3a-3c.优质课教学视频，山-一点通教学网

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