Ⅰ. 根据句意及首字母提示完成单词(5分)
1. It’s p _______ to say “Thank you” when someone helps you.
2. —Where is Tom?
—P _______ he is in the library. I’m not sure.
3. Please close the d _______ when you go out.
4. It a _______ me when the man next to me began to smoke.
5. I want to help her, but I can’t think of any s _______ to this problem.
