Answer: After seeing the dead body of Duncan, Malcolm and Dunalbain fear for their own lives for which they flee from Scotland causing the people to suspect they were the ones responsible for the death of their father which in effect the assassination of their father allows Macbeth to claim the throne.
A preposition is a word that is used to relate a noun or pronoun to another word, clause or phrase. Usually, a preposition precedes the noun or pronoun. In the given sentence, the prepositions used are "on" and "for". The preposition "on" precedes the noun table. And the preposition "for" precedes the pronoun "our".