第 55 題：＿＿＿ is usually written in an email or at the end of a business letter before the names of the people who will receive a copy.

20000 國貿業務丙級 / 工作項目 05：基礎貿易英文－常用貿易英文

＿＿＿ is usually written in an email or at the end of a business letter before the names of the people who will receive a copy.