1. (2022高三上·林芝月考) 阅读下面材料，在 空白处填入适当的内容(1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 Cuyahog a River Cleveland, Ohio. It  (be) unimaginable that it could ever be cleaned up. The river was so polluted that it  (actual) caught fire and burned. Now, years later, this river is one of  most outstanding examples of environmental cleanup.

But the river wasn't changed in a few days even a few months. It took years of work (reduce) the 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 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 an 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).