They _________ on the program for almost one week before I joined them, and now we are still working

题目简介

They _________ on the program for almost one week before I joined them, and now we are still working

题目详情


They _________ on the program for almost one week before I joined them, and now we are still working on it as no good results have come out so far.
A.have workedB.had worked
C.have been workingD.had been working
题型:单选题难度:偏易来源:不详

答案

D
考查时态。句意:在我加入他们之前,他们一直在这个项目上工作了将近一个星期。结合语境可知本句描述的在过去已经完成的正在进行的动作,故用过去完成进行时态,选D。

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