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2.By the time he got to the airport,the plane had taken off.（改一般疑问）

分类: 作业答案 • 2021-11-12 23:48:18

问题描述：

2.By the time he got to the airport,the plane had taken off.（改一般疑问）

答

Had the plane taken off by the time he got to the airport?