You can find stuff like that online:
http://wikitravel.org/en/Korean_phrasebook
The Korean audio clips at the Official Korean Tourism website didn’t work for me. They might for others.
http://english.visitkorea.or.kr/enu/AK/AK_EN_1_5_13_1.jsp
Where is the toilet? 화장실이 어디에 있습니까? (hwajangsiri odi-e isseumnikka?)
What? 무엇? (mu-eot?)
What? (shortened, more common) 뭐? (mwo?)
Where? 어디? (eodi?)
Who? 누구? (nugu?)
When? 언제? (eonje?)
Which? 무슨? (museun?)
How much? 얼마? (eolma?)
You are a bottomless well of Korean resources! Thx!