用所给词的适当形式填空。  

1. I don't like the mall because it's much too _______ (crowd).  

2. I decide _______ (have) a talk with the boys.  

3. I want to get some _    ____ (information) about the town.  

4. We should learn to speak _     _  _ (polite).  

5. Every year many _______ (tour) come to Beijing.

在服务过程中，首要的原则就是敬人之心常存。