a set of lights that controls the traffic on a road - traffic light, a person on a beach or at a swimming pool to keep the swimmers safe and save them if they are in danger - lifeguard, a person who works in a library - librarian, show respect to people - polite, To do something one after the other, not at the same time. - take turn, To throw things in public places. - litter, A person who is a leader of a school - principal, To help students or walkers to safety cross the street - crossing guard, to remove dirt, trash … from somewhere - clean up,

Unit 9 Following rules

순위표

플래시 카드(은)는 개방형 템플릿입니다. 순위표에 올라가는 점수를 산출하지 않습니다.

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