In Formal letter^x, Invitations^x, Letter of invitation^x

Hello, My boss has asked me to write a formal letter of invitation for six Chinese dignitaries that will be visiting our business next month. It is my understanding that they will all be referenced individually in the same letter. Also, we do not have their individual addresses- it is going...

Hi, I'm a new user. Just a very short question: what will students learn after writing the formal letter of invitation? Thanks.