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(How long /live in Detroit) They lived in Detroit for three years.过去式提问是不是How long did they live in Detroit?

分类: 作业答案 • 2022-01-18 20:21:09

问题描述：

(How long /live in Detroit) They lived in Detroit for three years.过去式提问是不是How long did they live in Detroit?

答

最好用had they lived,因为是一段时间