一、选词填空。
recycle save use reuse unplug
1. We should water every day.
2. Let's old boxes to make toys.
3. We can bottles and paper.
4. Please your computer after use.
5. We can solar power to cook food.

1. save
2. reuse
3. recycle
4. unplug
5. use

二、按要求完成句子。
1. We should take quick showers. (改为否定句)
We take quick showers.
2. Bring your own bags to shops. (用 should 改写句子)
You your own bags to shops.
3. Recycle old clothes, toys and books. (用 We should ... 改写句子)
We old clothes, toys and books.
4. We can save energy by following the “3R” rules. (对画线部分提问)
we save energy?

1. should not 2. should bring 3. should recycle 4. How can

三、[新题型]Bella 翻阅词典时找到了一些“re-”开头的单词。阅读图文信息，选择括号内正确的单词完成短文，填字母序号。

( A. protect B. reduce C. reuse D. recycle E. refuse )
Our environment is becoming worse and worse. What can we do for the environment? If the boxes are useful, don’t throw them. We can try to 1. them. Collect old things and sort them, and then we can 2. them. We can take the bus and the metro(地铁) to school. That can 3. pollution(污染). If you don’t need the things, you can 4. to buy them. Each of us can do something to 5. our environment.

1. C 2. D 3. B 4. E 5. A