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Dear Sirs，My wife and I were very grateful to receive an invitation to attend the celebrations marki[查看详细] Dear Sirs，My wife and I were very grateful to receive an invitation to attend the celebrations marki[查看详细] Dear Sirs， My wife and I were very grateful to receive an invitation to attend the celebrations m[查看详细] Dear Sirs， Many thanks for your letter of October 6，We have given our careful consideration to yo[查看详细] 