Is Mr. Wang good at drawing his students into ______    discussion?

--- It was said that little Bill hit his classmate on the head.---He is thought to be a(an )________  boy, who is always ready to start a fight.

 Everybody’s fingerprints are _______, so the police can easily find the thieves if any is left when they are stealing.

. Before radio and TV, music could only be heard _______, that is, you had to go to places where musicians gave performances.

There are plenty of jobs ______ in the western part of the country.