Answer 1: pasaba.
<em>Explanation : The adverb "siempre" indicates a habitual action, so the verb must be conjugated in imperfect form.</em>
Answer 2: leyó.
<em>Explanation : The action of the verb happened once in the past, so the verb must be conjugated in preterite form.</em>
Answer 3: decía.
<em>Explanation : What is said in a written story is still being said, so the verb must be conjugated in imperfect form.</em>
Answer 4: demostraba.
<em>Explanation : The adverb "nunca" indicates a habitual action, so the verb must be conjugated in imperfect form.</em>
Answer 5: asistió.
<em>Explanation : The action of attending the university is finished in the past, so the verb must be conjugated in preterite form.</em>
Answer 6: decidió.
<em>Explanation : The decision to study law is an action that happened once in the past, so the verb must be conjugated in preterite form.</em>
Answer 7: gustaban.
<em>Explanation : The action of the verb "gustar" is habitual, so the verb must be conjugated in imperfect form.</em>
Answer 8: jugaba.
<em>Explanation : The action of the verb "jugar" is habitual, so the verb must be conjugated in imperfect form. </em>
Answer 9: fue.
<em>Explanation : The action of the verb finished in the past, because today he is not a football player, so the verb must be conjugated in preterite form.</em>
Answer 10: conducía.
<em>Explanation : The adverb "mientras", indicates that the action of this verb was being done when the action of another was initiated, so this verb must be conjugated in imperfect form.</em>
Answer 11: tuvo.
<em>Explanation : Having an accident is an action that happened once in the past, so the verb must be conjugated in preterite form.</em>
Answer 12: pasó.
<em>Explanation : Being two months in the hospital is an action completed in the past, so the verb must be conjugated in preterite form.</em>
Answer 13: comenzó.
<em>Explanation : Start studying something is an action that happened once in the past, so the verb must be conjugated in preterite form.</em>
Answer 14: compuso.
<em>Explanation : The action of composing those songs happened once in the past, so the verb must be conjugated in preterite form.</em>
Answer 15: pudo.
<em>Explanation : The action of being able to go back somewhere happened once in the past, so the verb must be conjugated in preterite form.</em>
Answer 16: terminó.
<em>Explanation : Finish studying something is an action that happened only once in the past, so the verb must be conjugated in preterite form.</em>
Answer 17: llegó.
<em>Explanation : Become a lawyer is an action that happened once in the past, so the verb must be conjugated in preterite form.</em>
Answer 18: Abandonó.
<em>Explanation : Give up an idea is an action that happened once in the past, so the verb must be conjugated in preterite form.</em>
Answer 19: grabó.
<em>Explanation : Record a disc is an action that happened once in the past, so the verb must be conjugated in preterite form.</em>
Answer 20: se hizo.
<em>Explanation : Become famous is an action that happened once in the past, so the verb must be conjugated in preterite form.</em>