They on the program for almost one month before l was arranged to help them. Now, we on it as no result has come out.A．had been working: are still workingB．had worked; were still workingC．have been 题目和参考答案——青夏教育精英家教网—

题目内容

They____on the program for almost one month before l was arranged to help them. Now, we____on it as no result has come out.

A．had been working: are still working

B．had worked; were still working

C．have been working; have worked

D．have worked; are still working

解析试题分析：句意：在我被安排帮助他们之前，他们一直在忙于这个项目。现在我们还在做这个项目，没有结果。第一空的动作发生在before l was arranged to help them.是过去的过去的动作，用过去完成进行时，第二空是现在正在发生的动作，用现在进行时，选A。
考点：考查时态

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