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(on,in)these days选哪一个?为甚么

分类: 作业答案 • 2022-05-30 14:30:48

问题描述：

答

on
表示具体的时间用on ,
比如:on Monday
on Friday afternoon
these days也是具体的时间

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(on,in)these days选哪一个?为甚么

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