Who 누가
Where 어디서
When 언제
What 무엇
Which 어떤 것
How 어떻게
Why 왜
In Korean these words (Wh) are placed after subject in a direct question sentence.
However, if subject is "you"(너/당신), it is usually omitted and the omission makes Wh placed in the beginning of sentences.
For example) 예를 들면
How are you? (너는) 어떻게 지내?
Which movie do you like best? (너는) 무슨 영화를 제일 좋아해?
Where is the Gyeong-bok palace? 경복궁이 어디에 있어요?
How could Jane pass the test? Jane이 어떻게 시험을 통과할 수 있었어?