In the next sentence, we have to conjugate the verb in parentheses and fill in the blank space with the appropriate preterite or imperfect conjugation, taking the context into consideration: **(poder)** Después de hacer un gran esfuerzo, mis padres ______ resolver el problema.

In this case, the appropriate conjugation of the verb is the **preterite tense (pudieron)** because we are talking about succeeding in doing something, given that the sentence expresses the idea that the person’s parents solved the problem.

Después de hacer un gran esfuerzo, mis padres **pudieron** resolver el problema.

In the next sentence, we have to conjugate the verb in parentheses and fill in the blank space with the appropriate preterite or imperfect conjugation, taking the context into consideration: **(saber)** Yo siempre ______ que era muy importante decir la verdad.

In this case, the appropriate conjugation of the verb is the **preterite tense (supe)** because we are talking about acknowledging something, given that the sentence expresses the idea that the person always acknowledged the importance of telling the truth.

Yo siempre **supe** que era muy importante decir la verdad.

In the next sentence, we have to conjugate the verb in parentheses and fill in the blank space with the appropriate preterite or imperfect conjugation, taking the context into consideration: **(conocer)** La semana pasada nosotros ______ al boxeador que ganó la pelea reciente.

In this case, the appropriate conjugation of the verb is the **preterite tense (conocimos)** because we are talking about meeting someone for the first time, given that the sentence expresses the idea that they met the boxer that won the fight.

La semana pasada nosotros **conocimos** al boxeador que ganó la pelea reciente.

In the next sentence, we have to conjugate the verb in parentheses and fill in the blank space with the appropriate preterite or imperfect conjugation, taking the context into consideration: **(poder)** La policía le aseguró a la víctima que ______ garantizar su seguridad.

In this case, the appropriate conjugation of the verb is the **imperfect tense (podía)** because we are talking about being able to do something, given that the sentence expresses the idea that the police could provide security for the victim.

La policía le aseguró a la víctima que **podía** garantizar su seguridad.

In the next sentence, we have to conjugate the verb in parentheses and fill in the blank space with the appropriate preterite or imperfect conjugation, taking the context into consideration: **(querer)** Paco no ______ respetar el límite de velocidad, pero la policía le dijo que tenía que hacerlo.

In this case, the appropriate conjugation of the verb is the **imperfect tense (quería)** because we are talking about not wanting to do something, given that the sentence expresses the idea that Paco didn’t want to respect the speed limit.

Paco no **quería** respetar el límite de velocidad, pero la policía le dijo que tenía que hacerlo.

In the next sentence, we have to conjugate the verb in parentheses and fill in the blank space with the appropriate preterite or imperfect conjugation, taking the context into consideration: **(conocer)** El presidente y la senadora se ______ muy bien y se confiaban mucho.

In this case, the appropriate conjugation of the verb is the **imperfect tense (conocían)** because we are talking about knowing each other, given that the sentence expresses the idea that the president and the senator knew each other very well.

El presidente y la senadora se **conocían** muy bien y se confiaban mucho.