go through the motions

go through the motions
    v 1: pretend to do something by acting as if one was really
         doing it; "She isn't really working--she's just going
         through the motions"
    

28 Moby Thesaurus words for "go through the motions":
      act, act a part, affect, assume, bluff, counterfeit, cover up,
      dissemble, dissimulate, fake, feign, four-flush, gammon, let on,
      let on like, make a pretense, make as if, make believe, make like,
      play, play a part, play possum, playact, pretend, profess, put on,
      sham, simulate