Exercise 1. choose the right word. this butterfly's annual migrasion/migration is across north america. an employer/employor is a person or organization that employs people. people who are in charge of a team at work are called supervisors/supervisers. the administrator/administrater must bear in mind that he has nothing to do with the real estate of decedent. the hong kong bank is hong kong's largest financial institution/institusion. a mansion/mantion is a large, impressive house. it’s an unusual degree of dissonance/dissonence for such choral styles. persuation/persuasion is the act of persuading someone to do something or to believe that something is true. she was shocked by my extravagance/extravagence. he had the impertinance/impertinence to demand a raise.