Which choice best describes the biggest impact of jonas salk's work with poliomyelitis?

What are the prevalent literature of the philippines during the pre colonial period?

Read michelle’s claim statement for a literary analysis essay about a nonfiction text. in his autobiography up from slavery, booker t. washington shows how the different settings, or places he lived, affected his life, work ethic, and beliefs. which quote from the text can she use as evidence to support her claim? a. “the early years of my life, which were spent in the little cabin, were not very different from those of thousands of other slaves.” b. “after some hours had passed, the head teacher said to me: ‘the adjoining recitation-room needs sweeping. take the broom and sweep it.’” c. “during my last year at hampton every minute of my time that was not occupied with my duties as janitor was devoted to hard study.” d. “after the coming of freedom there were two points upon which practically all the people on our place were agreed… that they must change their names, and that they must leave the old plantation for at least a few days or weeks in order that they might really feel sure that they were free.”

Ireally, really need with this asap. i don't understand spanish prepositions and when they should be used. the questions are:fiesta con juan el fin de semana pasado. el parque está casa. es una lástima que haya tantos lago. el jefe quiere inmediatamente. the answers can be one of the following: en, con, de, a i will award !