The U.S. Secret Service estimates that some $1 bil Keynote speech　　A Keynote speech is to outline the subjects to be add

柜台服务Customer Service SALESMAN： Can I help you？　　JOHN： Yes， I would like to buy a Walkman. Can you tell me about the mode

Wake-up Call Service Key Sentences（重点句子）　　1．I'm going to Tianjln early tomorrow morning．　　我明天一大早要去天津。　　2．So I would

Laundry Service 　Key Sentences（重点句子）　　1．Excuse me．Have you any laundry？　　对不起，请问有没有要洗的衣服？　　2．The laundry man is here to

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