Past tense in Korean grammar is used to express actions or situations that have occurred in the past. The most common way to form the past tense is by using the verb stem and attaching the appropriate verb endings, such as -았/었습니다, -았/었어요, or -았/었어. Learning the past tense in Korean is essential for clear and effective communication, as it allows speakers to talk about their experiences, tell stories, and discuss historical events. In this exercise, we will practice filling in the blanks with the correct past tense verb forms to complete Korean sentences.