LEFTTHEDOOROPEN

AUXILIARYENGINEBackup power source ITSALLGREEKTOMEAdmission of confusion ... or a hint for interpreting four answers in this puzzle IRREGULARGALAXYCelestial object with an indistinct shape ROUTINEPHYSICALAnnual exam performed by a general practitioner SORRYWERECLOSED56-Across on a store ITHINKILLMANAGE"This seems doable on my own" ITSNOTAGOODSIGN"That spells trouble!" SOLOPERFORMANCEAny operatic aria SINGLEOCCUPANCYHotel room for one EXCLUSIVEAGENCYOnly broker marketing a house INSEVENTHHEAVEN"Pearly Gates" happy BUILDINGBRIDGESUrging reforms with Bible, did special reconciliation work (in pairs of across answers here) ESCAPEATTENTIONSlip by unnoticed POLLINGSTATIONSPlaces that get a lot of volunteers in November