1．The association(社团) founded in this high school is to keep the school clean. It calls on all the students to avoid using plastic bags in the dormitory(宿舍) and canteen(食堂)．
2．Adults often misunderstand(误解) their children. They think that it is impolite to dash(猛冲) into the room without knocking at the door.
3．The mother defended(保卫) her child from the mad dog and was injured.
4．The man who witnessed the accident made a statement(陈述) to the police.
5．When you greet(欢迎) someone, you say “Hello” or shake hands with them.
6．Tomorrow morning the secretary will represent(代表) the president at the meeting to deliver a speech.
7．The flight(航班) from New York to London takes about 7 hours.
8．It was not until the late afternoon that he began to deal with the major(主要的) problem.
