题目内容
【题目】Twenty years ago, Mr. Wu isn't very big then.
【答案】isn't错误，改为wasn't
【解析】句意：二十年前，吴先生体格不大。时态应为一般过去时，故应用wasn't。所以答案是“isn't错误，改为wasn't”。
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题目内容
【题目】Twenty years ago, Mr. Wu isn't very big then.
【答案】isn't错误，改为wasn't
【解析】句意：二十年前，吴先生体格不大。时态应为一般过去时，故应用wasn't。所以答案是“isn't错误，改为wasn't”。