Theyhadfinishedthework________last

发布时间:2020-07-26 19:50:32

They had finished the work ________ last month.A.in the end ofB.at the end ofC.by the end ofD.in the end

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C解析详解:by the end of接过去时间点时,用过去完成时。从had finished过去完成时态可断定
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