Can someone help me advance in Spanish coz I know some just not enough to get me by in a Spanish speaking country

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:

Enuncia un ejemplo (sea social o natural) en el que creas se puede aplicar el cálculo y argumenta el tipo de proceso que es necesario para modelar tu ejemplo.

Read the following sentence and choose the verb tense that should be used to translate it to spanish. it was a very beautiful place. a)preterit tense for a completed action b)imperfect tense for a description