AsIwasreadingEnglishintheclassroom,itrainedoutside.A.BeforeB.WhyC.WhenD.U

发布时间:2020-08-07 04:20:40

As I was reading English in the classroom, it rained outside.A.BeforeB.WhyC.WhenD.Until

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C解析意思是“当……的时候”。
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