They _________ othe program for almost one week before I joined them, and now we _____ oit as no good results have come out so far. ( )<br>· had beeworking; are still working<br>· had worked; were still working<br>· have beeworking; have worked<br>· have worked; were still working

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

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