Your body's cells work best in which form?

Question 11 (fill-in-the-blank worth 1 points) change this verb from the present tense to the preterite tense. tú estudias answer for blank 1: question 12 (fill-in-the-blank worth 1 points) change this verb from the present tense to the preterite tense. raúl estudia answer for blank 1: question 13 (fill-in-the-blank worth 1 points) change this verb from the present tense to the preterite tense. nosotros pagamos answer for blank 1: question 14 (fill-in-the-blank worth 1 points) fill the blank with the preterite tense of the verb in parentheses. usted a la tienda por teléfono. (llamar) answer for blank 1: question 15 (fill-in-the-blank worth 1 points) fill the blank with the preterite tense of the verb in parentheses. lolita pablo en la fiesta anoche. (hablar) answer for blank 1:

País en el que estuvo exiliado por un tiempo. a. estados unidos c. colombia b. argentina d. venezuela

Which pair of verbs correctly completes the sentence? carolina: mi amigo ramón de guatemala y ahora trabajando en los estados unidos. a. es, es b. está, está c. es, está d. está, es