根据句意和首字母或汉语提示，写出句中所缺单词的正确形式，每空一词。

1. It's____  (不可能)  for you to learn English well if you don't work hard.

2. ____ (幸运地) , nobody was hurt in the accident.

3. Don't ____ (扔) litter about. It's a had habit.

4. Han Mei made great____ (进步) in learning English.

5. In China it is a custom to give kids lucky____ （钱）during the Spring Festival.

6. Sorry ! I can't work it out. You'd better a____ the teacher for help.

7. I enjoy r ____ books in my free time.

8. The wind is blowing s____ . Don't go out now.

9. Maria likes e____ apples.

10. The price of the coat is very h____ . I can't afford it.