Crossword clues for Do one of the three R's:INITOne of three for J. R. R. Tolkien: Abbr.REUSEOne of the three R's for an environmentalistRITHMETICOne of the three R's.READINGOne of the three R's.RDGOne of the three R'sREADDo one of the three R'sRECYCLEOne of the three R's of eco-friendlinessREUSEOne of the three R's of environmentalismREDUCEOne of the three R's of environmentalismREUSEOne of the three "green" R'sRECYCLEOne of the three green R'sREUSEOne of the environmental Three R'sREUSESPractices one of the environmental three R'sREUSEOne of the eco-friendly three R's