Crossword clues for What subs do 3 lettersAnswerClueSUBClassroom tempSUBPinch hitteSUB<<NO CLUE>>SUBBackup, brieflySUBTotalSUBBackupSUBLead-in for zero or primeSUBQuiznos purchaseSUBDeli choiceSUBQuiznos offeringSUBActing teacherSUBLong lunch, for shortSUBUndersea prowlerSUBOne may be needed after a sports injurySUBRed October, for oneSUBThe USS Jimmy Carter, e.g.SUBBasketball's "sixth man," e.g.SUBLarge sandwich, for shortSUBCome off the bench (for)SUBDas Boot setting, brieflySUBLunch eaten with both handsSUBSomething to go down inSUBLong sandwichSUBPart of a Quiznos combo mealSUBSonar userSUBThe Nautilus, for oneSUBLong lunchSUBDiving craftSUBTwo-handed lunchSUBTempSUBPlayer off the pineSUBTeacher for a daySUBGrinder's kinSUBReplacementSUBOne who's there, but not at the startSUBTemporary teacherSUBBench-warmerSUBOne of three allowed per team in a World Cup soccer matchSUBStand-inSUBDo a post-dining jobSUBOne who's in for youSUBClassroom stand-inSUBLunch on a rollSUBNautilus, for oneSUBSecond-stringerSUBPut (in) or take (out)SUBLunch from a deliSUBSizable sandwichSUBPinch hitterSUBGo in (for)