Write the next sentence in the following story.

How to be posh
Display good manners.
Posh people have good manners and know the boundaries in human relations. Always say " please " and " thank you " when the situation calls for it.
Say " excuse me, " greet people politely, and display good table manners-such as chewing with your mouth closed. Also do not use your phone at the table or when talking to someone.