Itisnolongeraproblem_______thepoorchildreninthisdistrictcangotoscho

发布时间：2020-08-14 03:12:30

It is no longer a problem _______ the poor children in this district can go to schoolA.thatB.whetherC.soD.because

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A解析句中it是形式主语，代替 that引导的主语从句。
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