Spanish HELP!!! Please? quickly?

Yo __el sobre en el buzón. pude estuve puse Question 2 (Multiple Choice Worth 1 points)Nosotros ____a la oficina. anduvimos pusimos supimos Question 3 (Multiple Choice Worth 1 points)Ellos ____a la biblioteca. anduvieron pusieron supieron Question 4 (Multiple Choice Worth 1 points)Yo escribí la _____en el sobre. estampilla dirección tarjeta Question 5 (Multiple Choice Worth 1 points)Yo puse la carta en el ___. sello sobre lavabo Question 6 (Fill-In-The-Blank Worth 1 points)Fill in the blank with the correct form of the verb in the preterite tense. Armando ___ en la piscina todo el día. (estar) Answer for Blank 1: Question 7 (Fill-In-The-Blank Worth 1 points)Fill in the blank with the correct form of the verb in the preterite tense. Carlos__ al parque. (andar) Answer for Blank 1: Question 8 (Fill-In-The-Blank Worth 1 points)Fill in the blank with the correct form of the verb in the preterite tense. Nosotros __ la dirección en el sobre. (poner) Answer for Blank 1: Question 9 (Fill-In-The-Blank Worth 1 points)Fill in the blank with the correct form of the verb in the preterite tense. Ustedes no __ir al concierto anoche. ¿Por qué? (poder) Answer for Blank 1: Question 10 (Fill-In-The-Blank Worth 1 points)Fill in the blank with the correct form of the verb in the preterite tense. Yo ____ en la tienda. (estar) Answer for Blank 1: Question 11 (Fill-In-The-Blank Worth 1 points)Fill in the blank with the correct form of the verb in the preterite tense. Tú __la verdad anoche. (saber) Answer for Blank 1: Question 12 (Fill-In-The-Blank Worth 1 points)Fill in the blank with the correct form of the verb in the preterite tense. Yo __ mi libro encima de la mesa. (poner) Answer for Blank 1: Question 13 (Fill-In-The-Blank Worth 1 points)Fill in the blank with the correct form of the verb in the preterite tense. Vosotros __ al teatro. (andar) Answer for Blank 1: Question 14 (Multiple Choice Worth 1 points)Yo pongo UNA _____en el sobre. sello estampilla correo Question 15 (Multiple Choice Worth 1 points)When used in the preterite tense, the verb "saber" means to speak to go out to find out