what ??
무엇? [Mu-eot]
뭐 ? (informal) [Mwo]
what do you want ??
무엇을 원해요? [Mu-eos-eul won-hae-yo]
who ??
누가? [Nu-ga]
who is he/she ??
(she) 그녀는 누구예요? [Geu-nyeo-neun nu-gu-ye-yo]
(he) 그녀누구예요? [Geu-nyeo nu-gu-ye-yo]
I don't want
싫어 (really childish and informal) [Sirh-eo]
안 원해요 [An won-hae-yo]
I don't know
모르겠어요 [mo-reu-gess-eo-yo]
몰라요 [mol-la-yo]
where ??
어디? [eo-di]
when ??
언제? [on-je]