What makes a good letter formal?

What is the full form of men? How do I write a written warning? Is using good dinner table manners independent? How do you say - Bienvenue a board? Do you call invited guest that did not RSVP? What does the letter p mean on silver tableware? What is the French expression for It is okay? What is an antonym for dude? What does it mean to call someone Elmo? What do dutch people wear? How do you address an envelope to Mr and Mrs in french? What is the present perfect tense of Jeff invite? Why do the youngest crachits cram spoons into their mouths after they finish setting the table? How do you write application to school principal for picnic? Do women have to wear black to a black tie event? What is a good made up idiom? What are slang words for style? How do you thank a job invitation? good afternoon! ? What is the past tense of courtesy?