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classroom,we hope every parents can attend this meeting from their busy look froward to your arrival! xxxmiddle school education department 三、dear sir/madam: im delighted you have accepted our invitation to speak at the conference in [city] on [date]. as we agreed, youll be speaking on the topic from [time] to [time]. there will be an additional minutes for questions. would you please tell me what kind of audiovisual equipment youll need. if you could let me know your specific requirements by [date], ill have plenty of time to make sure that the hotel provides you with what you need. thank you again for agreeing to speak. i look forward to hearing from you. sincerely yours, [name] [title] 四、dear sir/madam: thank you for your letter of [date]. im glad that you are also going to [place] next month. it would be a great pleasure to meet you at the[exhibition/trade fair]. our pany is having a reception at [hotel] on the evening of [date] and i would be very pleased if you could attend. i look forward to hearing from you soon. yours si