Passed from father to son, the music has not changed for eight centuries,and among the richer Naxi people, ________ knowledge of this music showed that you were ________real gentleman.
He has no money nor friends here. That’s why he ______ sleep in the street.
It was said ____that was _____ he succeeded in running his business.
The farmers are only allowed to cut _____ trees and cut them _____ for firewood once a year.
. Doctors say _____ good diet is of ______ great benefit to our health.
Mike is a student at a famous university, _______ for a doctor degree.