根据括号中的汉语、首字母或音标写出单词，使句子意思完整正确。(每空限填一词)

1. When I saw the model pyramids and the model Golden Gate Bridge, I couldn't _____ my eyes. (相信)

2. Sandy wants to become a _____ (著名的) singer and travel around the world.

3. American people like calling "film" _____ (电影).

4. There was a lot of _____ (车辆) on the city road. We'd better take the underground.

5. I decided to stay home and pack my bags i_____ (代替).

6. There is _____ (什么也没有) in the fridge. It's empty.

7. It's such an easy book. _____ (甚至) a child can understand it.

8. I was playing computer games the _____ (整个的) afternoon yesterday.

绝缘子在电力线路中的作用是什么？