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.