1. It's (surprise)_______that Kai passed this exam. 2.She was (surprise)________that you didn't come. 3. We have sat here for hours to enjoy the (beautiful)_______of this lake. 4.We'll make this beach clean and (beauty)________again. 5. They are discussing the preservation of (nature)______resources. 6. People say that breast-feeding is better than bottle-feeding because it's more (nature)______. 7.If the (polute)______continues,what will happen? 8. Smoke and waste chemicals make the air and water (pollute)______. 9. The problem of world (pollute)______is getting worse and worse. 10.The air in the city is very (pollute)______. 11. Air and water (pollute)_____can make people fall ill. 12. People must learn about keeping the environment (pollute)_______. 13.We must reduce (pollute)_____ in the area we live in. 14.(Pollute)_____air can cause illness and even death. 15.(Pollute)_____problem will be discussed in the conference at the end of this month. 16. Dick had an accident last month because he drove (care)________.