Once upon a time, there was a gang of evil goblins（小妖精) who lived in a forest. They spent a lot of their time__ (make) fun of a poor old man who could now hardly move, see, or hear. They showed no respect for __ age.
The situation became so extreme that Great Wizard （男巫） decided to teach the goblins ___ lesson. He cast a spell , and from that moment, every insult（侮辱）____was directed at the old man made the old man better, __ had the opposite effect on the goblin who was doing the insulting. Of course, the goblins knew nothing about   _ was happening. The more they called the man an “old fool”, the__ (young) of mind he became, while the goblin who __(shout )at him aged rapidly, and became a little more foolish.
As time went on, those evil goblins were becoming terribly old , ugly, stupid, and clumsy  ____ even realizing it. Finally, the Great Wizard allowed the goblins to see themselves, and___   (surprise)they saw that they had turned into the disgusting creatures we now know as trolls（巨魔）.