填写单词。

1. His books have _______ the lives of millions of people.

2. How can I try to _______ English like a native speaker? You'd better practice more with English speaker.

3. It's our _______ to keep our classroom clean every day.

4. How can I _______ my parents if I do something wrong at school?

5. Boys and girls may think ______ on the same thing.

6. This river is seriously polluted. How will the government              with this problem?

7. Betty is my best friend, I bevieve our _______ will last for ever.

8. I'm not good at English, so I'm              to answer questions in the English class.

9. I can't pronounce many of the words correctly. My _______ is very poor.

10. I can't hear your words clearly. Could you please speak more _______?

11. When we heard the exciting news, we got ________.