________morecareful,theworkmightha

发布时间：2020-07-25 19:14:09

________ more careful, the work might have been done betterA.BeingB.Having beenC.If you had beenD.To have been

网友回答

C解析考查if 的过去虚拟句。 If 后用had done, 主句用情态动词+have done
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