Which of the following is the standard part of a business letter?
A.Subject line.
B.Enclosure notation.
C.Complimentary close.
出自:国家开放大学婚姻家庭法学

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按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
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