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

出自：华北水利水电大学英语

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