Involving multiple actions in one sentence and dealing with the tense of verbs [for Korean] Do you conjugate the tense of both verbs when writing a sentence that contains multiple actions that happened in the past? For example, which sentence is correct: 제가 김치찌개를 요리 하고 도서관에 갔어요. or 제가 김치찌개를 요리 했고 도서관에 갔어요.