根据下列句子的意思及所给汉语提示，写出每个句子空缺处单词的正确形式。
（每空限填一词）
1. You don't have to help me. I can do it by ______ (我自己).
2. The ______ (老板) is friendly to his workers.
3. October is the ______ (第十) month of the year.
4. We can go camping in ______ (夏天) in the country.
5. In order to ______ (通过) the exam, you should study more carefully.
6. We have been good friends ______ (自从……以来) 2005.
7. I want to buy a ______ (黑色的) coat. Would you like to go With me?
8. Many students in big cities often have ______ (午餐) in schools.
9. What will you do if it ______ (下雪) tomorrow?
10. Can you say that ______ (再次)? I didn't hear you.
