#~하고있었니?I was / She was / He was / You were / They were / We were=> Was I / Was she / Was he / Were you / Were they / Were we +work(월낑) / sing / walk(워낑) / drink water / study English / watch TV / eat dinner +ing?
그들은 저녁 먹던 중이었니? Were they eating dinner?
그는 우유마시는 중이었니? Was he drinking milk?
그 남자는 걷던 중이었니? Was he walking?
너 일하고 있었니? Were you working?
너 공부하고 있었니? Were you studying?
너 영어를 공부하고 있었니? Were .....
