Heisverybusy.Heworks________theda

发布时间:2020-07-27 05:57:30

He is very busy.He works ________ the day and studies ________ night.A.in, atB.at, inC.in, inD.at, at

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A解析“在白天”用介词in;“在夜里”用介词at.
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