The Past Progressive tense in Czech grammar, also known as the Imperfect tense, is used to describe actions that were ongoing or repeated in the past. The Past Progressive is formed by combining the imperfect form of the verb “být” (to be) with the active participle, which is derived from the infinitive form of the main verb. This tense is useful for describing past habits, repeated actions, or ongoing events. In this exercise, we will focus on the formation and use of the Past Progressive tense in Czech. Fill in the blanks with the appropriate verb form to complete the sentences.