1. (2019九上·天台期末) 用方框中所给单词的适当形式填空，每词限用一次（每空一词）。

polite   pain   her   avoid     secret

1. （1） It is  to speak loudly in public.
3. （2） It is a between you and me. Don't let others know it.
5. （3） The father thought it important to teach his daughter to protect .
7. （4） She almost cried as she recalled the  memory.
9. （5） He goes to work early in order to  the heavy traffic in the morning.