在写商务信函时，给不同的收信人写信，要考虑不同的文体。试试下面的选择练习吧。

Read excerpts from letters and decide which of the following types of letter it is probably from.

Your manager
Your staff
Someone from outside the office that you have regular correspondence with
Someone from outside the office that you have never written to before

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• correspondence [,kɔri´spɔndəns]   n.通信；符合；相当   (高中英语单词)