Ever since he left school, he ______ becoming a professor in that famous university.

They preferred ________ in bed ratherthan ________ horses.

It’s not a good habit to ____ late because the nextday you’ll feel tired.

One third of the country ________ covered with trees and the majority of the citizens________black people.( 2011·湖南)

It’s not what we do once in a while ________ shapes our lives, but what we do consistently.