单词拼写。

1. My father always gives me some a______ on some important choices.

2. I stayed awake last night because I was very c______ about my mother's illness.

3. There are 11 players in a football team, i______a goal keeper.

4. He is a stubborn person who is not easily p______ to change his mind.

5. The school was completely d______ by fire. Luckily, no one was killed in the disaster.

6. My fever is gone, but unluckily I'm s______ from an even worse cough.

7. All the small town l______ in ruins when the war was at an end.

8. Judging by his a______ he must come from the southern part of China.

9. He left his home angrily, d______ never to come back.

10. Both French and English are o______ languages in Canada.

粗制的环己烯在水浴上蒸馏，收集82-83℃馏分，这一操作的目的是什么？