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题目内容
（运营管理）
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
参考答案
