Ⅵ. Complete the passage with proper words or the correct forms of the words given.
With the development of industry, serious water 1. (pollute) happened in many cities around the world in recent years. The rivers were covered 2. dirty waste water for a long time. People could just see 3. (dirt) water everywhere nearby.
In some river areas, people were 4. (able) to get clean drinking water easily. They even had trouble 5. (keep) healthy. The event was caused by factory waste and 6. (day) rubbish, as well as wasting water in everyday heating and living. It makes governments introduce strict laws 7. (protect) water resources. This problem is one of the worst 8. (environment) disasters today. What's more, it is also a reminder of the 9. (important) of protecting fresh water for people's health. It drives people to take more useful 10. (action).

1. pollution 2. with 3. dirty 4. unable 5. keeping 6. daily 7. to protect 8. environmental 9. importance 10. actions

【分析】
本题为英语词汇运用题，需结合语境、固定搭配、词性转换等知识填空。解题思路：先通读全文理解大意，再逐句分析空格处的语法成分，结合所给词的形式或固定搭配确定答案，同时注意语境逻辑（如第4空需根据上下文判断否定含义）。
【解析】
1. 空格前为形容词serious，需填名词，pollute的名词形式为pollution；
2. 固定搭配be covered with（被……覆盖），故填with；
3. 修饰名词water需用形容词，dirt的形容词为dirty；
4. 语境为“难以获得干净饮用水”，需填able的反义词unable；
5. 固定搭配have trouble (in) doing sth，故填keep的动名词keeping；
6. 修饰名词rubbish需用形容词，day的形容词为daily；
7. 此处表目的，用不定式to protect；
8. 修饰名词disasters需用形容词，environment的形容词为environmental；
9. 定冠词the后接名词，important的名词为importance；
10. action为可数名词，more后接复数形式actions。
【答案】
1. pollution 2. with 3. dirty 4. unable 5. keeping 6. daily 7. to protect 8. environmental 9. importance 10. actions
【知识点】
英语词汇运用、固定搭配、词性转换
【点评】
本题考查学生对基础词汇的词性转换、常用固定搭配及语境逻辑的掌握，难度适中，需学生结合语法和语境准确判断单词的正确形式。
【难度系数】
0.6