2. 公务员
  3. They ______ on the program for almost one week before I joined them, and now we ______on it as no good results have come out so

They ______ on the program for almost one week before I joined them, and now we ______on it as no good results have come out so

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问题 They ______ on the program for almost one week before I joined them, and now we ______on it as no good results have come out so far.
选项 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
答案A
解析 第一空的动作发生在过去时之前，应该用过去完成时，再根据for almost one week可知，应该用过去完成进行时。第二空前有now，显然应该用现在进行时。故本题选A。
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