Iwasabouttogetonthebus____someon

发布时间:2020-07-25 09:51:43

I was about to get on the bus ____someone called me from behindA.untilB.whetherC.whileD.when

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D解析考查连词。此题是一个固定句型:be about to do … when ,即将做某事,正在那时,句意:我刚要上车正在这时有人在后面叫我。故选D。
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