Question

세 과목은 합격하고 한 과목은 낙제했어요 In its 'and' meaning, -고 is used to list independent/parallel states or actions. When describing past situations, -고 can occur both with or without the past tense marker. The inclusion or omission of the past tense marker before -고 does not change the meaning of such sentences.

Accepted Answer

I got three passes and one fail

Front	세 과목은 합격하고 한 과목은 낙제했어요
Back	I got three passes and one fail
Notes	In its 'and' meaning, -고 is used to list independent/parallel states or actions. When describing past situations, -고 can occur both with or without the past tense marker. The inclusion or omission of the past tense marker before -고 does not change the meaning of such sentences.

고 Past 과목은 Tense 세 합격하고 한 낙제했어요