Ⅰ. Choose the proper words from the box and complete the sentences.
从方框中选择恰当的单词，完成下列句子。每空一词，每词只用一次。

1. — Would you like another piece of cake?
— No, thanks. I'm .
2. Even when things are getting , the shower keeps everything clean.
3. The lost their boats in the storm. They had to find another way out.
4. That new TV show is absolutely (绝对地) . You'd better not see it.
5. Man is fighting against . It is one of the biggest problems for us.
6. We shouldn't in public. We should protect our environment.
7. Answers can be found at the of page 10.

1. full 2. dirty 3. fishermen 4. rubbish 5. pollution 6. litter 7. bottom

Ⅱ. Look at the picture of 1a and answer the questions. 看 1a 图片，回答下列问题。
1. What caused noise pollution?
_
2. How should the problem be solved?
_

1. Loud music, planes, building houses and mobile phones. 2. When we listen to music, we should turn it down.

Ⅲ. Read the tapescript of 1b and complete the passage.
阅读 1b 的听力录音材料，完成下面短文。每空一词。
Tony and Mark are talking about the river. It used to be , but it was really last weekend. Even the bottom of the river was full of , and there were for fishermen to catch. Because people are throwing into the river and factories are also putting into the river. They should the government. The government should the factories. And everyone in this town should help to the river, too.

clean, dirty, rubbish, no more fish, litter, waste, write to, close down, clean up