题目内容：

We all hope to live in a clean and beautiful world. Unfortunately ,we produce waste every day, 1. does harm to our environment. Still, we can all do something to help. In fact, even the simplest everyday activities can make a real 2. (differ) to the environment. Here are some ideas for you.

Don’t waste things. This saves money and reduces waste 3. (go) into the environment. Before we buy something new, think 4. it is really necessary---or maybe the old one will be just as good!

Use things 5. as long as possible. When we buy things, make sure that they last a long time. We should repair them if things no longer function well instead of throwing them away and buying new 6.. Don’t use a paper cup or a paper bag. 7. is better to use a china cup and a lunch box because you can use them again. We’d better buy products 8.(make ) from recycled materials, such as recycled paper, to help save trees.

It is high time we 9.（ take） action now ! If everyone makes a contribution to protecting the environment, there will be 10.(little) pollution and the world will become cleaner and more beautiful.