<prompt> Pedzisa mutsara unotevera: Makore mana gare gare, Choi akakodzera kumitambo miviri yekushambira pa2012 Summer Olympics muLondon nekubvisa FINA A-standard yekupinda nguva ye2:13.00 200 m munhu mumwechete uye 2:08.81 200 m butterfly kubva kuFINA World Championships muShanghai, China. Mumakwikwi emamita 200 ega ega, Choi akapedza kupisa mana ari pachinzvimbo chechitanhatu ne0.19 yechipiri kumashure kweGreat Britain Sophie Allen, achideredza nguva yake yeOlympic kusvika pa2:14.91. Akaisa makumi maviri nemana mumakwikwi ekutanga, uye haana kufambira mberi kuenda kuma semifainari. Kusiyana nemitambo yake yeOlympics yapfuura, Choi akanyoresa nguva yegumi inokurumidza ye2:08.45 mu  <response>: 200 m butterfly kuchengetedza nzvimbo yake yemasemifinari pamitambo yokutanga yemangwanani. Choi akakundikana kupinda mumakwikwi ekupedzisira, sezvo akapedza hafu yekupedzisira aine nguva yechitatu-yakaderera ye2:08.32. 