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英语
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he is swimming across the river.变否定句、一般疑问句、肯定回答、否定回答急需
人气：217 ℃ 时间：2020-03-21 19:04:31
解答
否定句：He isn't swimming across the river.一般疑问句：Is he swimming across the river?-Yes,he is.-No he isn't.
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