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2017高考英语（人教版）必修5U3一轮夯实练习及答案 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 Are you facing a situation that looks impossible to fix? In 1969，the pollution was terrible along the Cuyahoga River near Cleveland，Ohio.It 1 (be) unimaginable that it could ever be cleaned up.The river was so polluted that it 2 (actual) caught fire and burned.Now，years later，this river is one of 3 most outstanding examples of environmental cleanup. But the river wasn't changed in a few days 4 even a few months.It took years of work 5 (reduce) the industrial pollution and clean the water.Finally，that hard work paid off and now the water in the river is 6 (clean) than ever. Maybe you are facing an impossible situation.Maybe you have a habit 7 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 an impossible situation，don't you want a quick fix and something to change immediately? While there are 8 (amaze) stories of instant transformation，for most of us the | 
