1. (2019九下·金华期中) 阅读下面通告，完成空格。

1. （1） After reading the notice, we know how to be a good  . (driver or passenger?)
3. （2） People who will get on the train should  on the platform.
5. （3） You should pay attention to  pieces of advice at the station and three on the train.
7. （4） When you hear a "beep" sound,  .
9. （5） If you see old men or women, the disabled or women carrying babies, you had better .