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[单选题]Two major purposes of an invitation letter are________.YTt答案窝(daanwo.com)-大学生作业答案及考资分享平台
Ato invite the receiver of the letter to the eventYTt答案窝(daanwo.com)-大学生作业答案及考资分享平台
Bto inform the receiver of the conference activitiesYTt答案窝(daanwo.com)-大学生作业答案及考资分享平台
Cto ensure that the person receiving the letter is going to attendYTt答案窝(daanwo.com)-大学生作业答案及考资分享平台
Dto show your respect and appreciation for the receiver

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