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Seven Homework 熟練掌握本單元內(nèi)容。m Lily. B 39。s talk B. Let39。 制作感興趣的生日卡片。m 9. 39。s talk Sarah: John, this is my brother, Sam. John: Hi, Sam. Happy birthday! Sam: Thank you. John: How old are you? Sam: I’m six years old. (生日快樂(lè)) (我六歲了) (你多大了?) 詢(xún)問(wèn)數(shù)量: How many… 詢(xún)問(wèn)對(duì)方年齡: