1. Claudia _______ (celebrar) su cumpleaños cuando se torció el tobillo.
<em>Explanation 1:</em><em> The action of celebrating was happening when Claudia injured her ankle. Therefore the verb "celebrar" must be conjugated in the imperfect past and the verb "torcer" in the preterite.</em>
Answer 1: Claudia <u>celebraba</u> su cumpleaños cuando se torció el tobillo.
Translation 1: Claudia celebrated her birthday when she sprained her ankle.
2. Ramiro tenía fiebre cuando ______ (llegar) a la clínica.
<em>Explanation 2: </em><em>The action of "tener" was happening when Ramiro arrived at the clinic. Therefore the verb "tener" must be conjugated in the imperfect past and the verb "llegar" in the preterite. </em>
Answer 2: Ramiro tenía fiebre cuando <u>llegó</u> a la clínica.
Translation 2: Ramiro had a fever when he arrived at the clinic.
3. Mientras el doctor ______ (mirar) la radiografía, yo llamé por teléfono a mi novia.
<em>Explanation 3: </em><em>The action of "mirar" was happening when I phoned. Therefore the verb "mirar" must be conjugated in the imperfect past and the verb "llamar" in the preterite. </em>
Answer 3: Mientras el doctor <u>miraba</u> la radiografía, yo llamé por teléfono a mi novia.
Translation 3: While the doctor looked at the radiography, I phoned my girlfriend.
4. (Yo) ______ (estar) mirando la televisión cuando mi mamá se lastimó la mano con la puerta.
<em>Explanation 4:</em><em> The action of "mirar" was happening when my mom hurt her hand. Therefore the verb "mirar" must be conjugated in the imperfect past and the verb "lastimar" in the preterite. </em>
Answer 4: (Yo) <u>estaba</u> mirando la televisión cuando mi mamá se lastimó la mano con la puerta.
Translation 4: I was watching TV when my mom hurt her hand with the door.
5. Cuando Sandra llegó a la universidad, ______ (tener) un dolor de cabeza terrrible.
<em>Explanation 5:</em><em> The action of "tener" was happening when Sandra arrived at the university. Therefore the verb "tener" must be conjugated in the imperfect past and the verb "llegar" in the preterite.</em>
Answer 5: Cuando Sandra llegó a la universidad, <u>tenía</u> un dolor de cabeza terrrible.
Translation 5: When Sandra arrived at the university, she had a terrible headache.
6. ¿Dé niño (tú) ______ (enfermarse) con frecuencia?
<em>Explanation 6:</em><em> If the action of getting sick usually happened in the past, the verb must be conjugated in the imperfect past. </em>
Answer 6: ¿Dé niño (tú) <u>te enfermabas</u> con frecuencia?
Translation 6: As a child, did you get sick often?
7. El verano pasado, Luis y Olivia ______ (sufrir) una enfermedad exótica.
<em>Explanation 7: </em><em>If the action of suffering a disease happened only once in the past, the verb must be conjugated in the preterite. </em>
Answer 7: El verano pasado, Luis y Olivia <u>sufrieron</u> una enfermedad exótica.
Translation 7: Last summer, Luis and Olivia suffered an exotic disease.
8. Anoche, mi primo y yo ______ (perder) la receta de mi tía.
<em>Explanation 8:</em><em> Since the action of losing the recipe happened only once in the past, the verb must be conjugated in the preterite. </em>
Answer 8: Anoche, mi primo y yo <u>perdimos</u> la receta de mi tía.
Translation 8: Last night, my cousin and I lost my aunt's recipe.
9. Cuando era pequeña, Sara ______ (bailar) ballet todos los lunes y miércoles. Ayer Sara _____ (bailar) ballet en el recital de la universidad.usually happened in the past, the verb must be conjugated in the imperfect past.
<em>Explanation 9:</em><em> Since the action of dancing ballet usually happened in the past when Sara was a child, the verb must be conjugated in the imperfect past. When she danced only once yesterday in the recital, this verb must be conjugated in the preterite.</em>
Answer 9: Cuando era pequeña, Sara <u>bailaba</u> ballet todos los lunes y miércoles. Ayer, Sara <u>bailó</u> ballet en el recital de la universidad.
Translation 9: When she was a child, Sara danced ballet every Monday and Wednesday. Yesterday, Sara danced ballet at the university recital.
10. La semana pasada, (yo) le ______ (escribir) un mensaje electróico a mi papá. Antes (yo) ______ (escribir) las cartas a mano o con una máquina de escribir.
<em>Explanation 10:</em><em> Since the action of writing a mail happened only once last week, the verb must be conjugated in the preterite. Before, she wrote usually by hand, so this verb must be conjugated in the imperfect past.</em>
Answer 10: La semana pasada, (yo) le <u>escribí</u> un mensaje electrónico a mi papá. Antes (yo) <u>escribía</u> las cartas a mano o con una máquina de escribir.
Translation 10: Last week, I wrote an email to my dad. Before, I wrote the letters by hand or with a typewriter.
<h2><em>Spymore</em></h2>