IV．根据句意及所给单词的首字母或汉语提示，写出所缺单词的正确形式。（每空1分，满分 10分）
1. He went to America in the 1980s and s_________ down there.
2. Festivals let us enjoy life, be proud of our c____ and forget our work for a while.
3. It’s bad ________(礼貌) to ask about others’ salary if you are not very familiar.
4. Will you satisfy my _______(好奇心) and tell me how much it cost?
5. No student is allowed to go out during class without the teacher’s p_______.
6. He was _______(授予) a gold medal for his great contribution to the country.
7. It is ____ (难以置信的) that the event repeated itself years later in the same place.
8. I must a_______ for not being able to meet you.
9. As we all know, Antarctica(南极洲) is the coldest c_______ on the earth.
10.The fans ________(尖叫) with excitement when they saw the star.