272. Because of the role he played in freeing the African-American from slavery, Abraham Lincoln is ______ as one of the _______ of all American presidents .
Eating too much fat can ________ heart disease and cause high blood pressure.
Everyone is different and that is ________ makes our world so much better.
______ is generally accepted, economic growth is determined by the smooth development of production.
We are taught that a business letter should be written in a formal style _____ in a personal one.
Maria has written two novels, both of ________ have been made into television series.