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最佳答案:一1.Is the bike old?Yes it is.(肯定) No,it isn't.(否定)2.Do we read English in the mo
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最佳答案:1.She isn't a kind girlIs she a kind girl?---No,she isn't.2.He wasn't a teacher
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最佳答案:1.My father hasn't been to the great wallHas your father been to the great wall?