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道歉书作文400字篇1

Dear Sir,

I am writing this letter to apologize to you for the mistake that we sent the shoes in wrong color. I have acknowledged that my fault has brought you great trouble and unconviniences. I hereby express my deep sorrow for this matter and we are going to do our best to make it up to you. I assure you that this mistake will not happen once again and would appreciate very much if you could give us a chance to show our sincerity on this matter.

Best regards

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