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题目内容
（华北水利水电大学英语）
They _________ othe program for almost one week before I joined them, and now we _____ oit as no good results have come out so far. ( )
·had beeworking;are still working
·had worked; were still working
·have beeworking; have worked
·have worked; were still working
·had beeworking;are still working
·had worked; were still working
·have beeworking; have worked
·have worked; were still working
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