听，并跟读下列单词变形
1. politely adv.—polite adj.有礼貌的—impolite adj.不礼貌的
2. turn n.—turning n.转弯处

听，并跟读下列短语
1.cut in on others打断别人(谈话)
2.drop litter everywhere到处乱扔垃圾
3. leave the tap running让水龙头开着
4.obey traffic rules遵守交通规则
5. put sth back 把某物放回原处