阅读理解。
   How to make our city better？We will build（创建） a civilized city（文明城市）.

First	We must make the city clean.Please don't litter and spit everywhere.Don't draw on the wall and so on.
Then	We will green our city.We can plant more trees around the city.Don't pick flowers in the park.
Next	We should follow（遵守）the traffic rules（交通规则）.Don't run a red light.Please walk on the "zebra crossing（斑马线）".Please wear your helmet（头盔），when you ride a motorbike（摩托车）.
Finally	Please to be a polite（有礼貌的） man.We should speak politely to others.

a）阅读短文，根据文章内容补全句子。
（1）Do not

draw

draw

on the wall.
（2）Don't run a

red

red

light.
（3）When you

ride

ride

a motorbike，please wear your helmet.
b）按要求完成下列各题。
（4）What can we do around the city？

We can plant more trees.

We can plant more trees.

（5）根据上下文，试把文中划线的句子翻译成中文。

请做一个有礼貌的人。

请做一个有礼貌的人。