Greek Mythology has played an important role in shaping Western culture. Today, its stories are frequently ＿＿（21）＿＿ to in speech, in writing, and in art. ＿＿（22）＿＿ , there is the story of Sisyphus, the most ＿＿（23）＿＿ and cunning knave on earth. He was condemned in Tartarus to forever roll a boulder to the top of a mountain. Every day he ＿＿（24）＿＿ slowly up the hill. His hard labor never paid off though, for once he reached the ＿＿（25）＿＿ , the boulder would roll back down, and Sisyphus would have to start over again. This scene, which can be seen in paintings ＿＿（26）＿＿ in sculptures, has since become a symbol of human’s ＿＿（27）＿＿ never-ending struggle to improve themselves.