阅读下面材料，在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式。（共10小题；每小题1.5分，满分15分）
Are you facing a situation that looking impossible to fix?
In 1969, the pollution is terrible along the Cuyahoga River near Cleveland, Ohio. It _____(be)imaginable that it could be ever be cleaned up. The rive was so polluted that it ______(actual) caught fire and burned. Now year late,this rive is one of_______most outstanding examples of environmental cleanup.
But river wasn’t changed in a few days_____even a few months. It took years of work ______(reduce) industrial pollution and clean the water. Finally, that hard work paid off and now the water in the river is______(clean) than ever.
Maybe you are facing an impossible situation. Maybe you have a habit _____is driving your family crazy. Possibly you drink too much or don’t know how to control your credit card use. When you face such impossible situation, don’t you want a quick fix and something to change immediately.
While there are_______(amaze) stories of instant transformation, for most of us the  _______(change) are gradual and require a lot of effort and work, like cleaning up a polluted river. Just be_______(patience)