Smoking is one of the ______ of heart disease and it kills lots of people every year.

Tom’s __towards guests really makes me feel embarrassed in the party. 

If you want to get more information on how to apply for studying overseas, you can go to the office of foreign      for details.

Clearness of______is more important than beauty of language.

There was a            reaction from the public when the singer was sent to prison last week.