1) The document provides examples of invitations, announcements, and short messages in English. 2) The first example is an invitation from Adhis for Fetty to attend his sister's birthday party at Adhis' house on Saturday at 7pm. 3) The second is an announcement for all students in Class Eight A to gather in the school yard on Friday for an English contest preparation. 4) The third is a short message from the English club chairman, Aiman, informing members that there will be no meeting this week and he will update them on when the next meeting will be.