1. (2017八下·泰兴期中) A．根据句意和汉语提示，在空白处填入一个适当的单词(每空限一词)。

1. （1） You must write down the (要点) because they are very important.

3. （2） Our English teacher has 20 years of teaching (经验).

5. （3） Have you had a (讨论) about the problem?

7. （4） There are many big companies and (国际的) banks in this street.

9. （5） The city has been famous for its beauty since the (第二十) century.