How does interjection effect in real life?

What does it mean when a person is discouraging you? Where was mrs mcwilliams hiding? Why do people do what they see others doing? What do you say on an unveiling invitation? What happens if you do not show up for the reaping? What is a sentence for odious? What is the person who waits on tables? What did people wear in the 1930's and 40's? Is it cordially invite or invites you? What is the definition of the word 'mischief'? Is it improper to begin a sentence with the word and? How do you write a letter requesting for annual leave extension? What does condecending mean? What does oh pardon mean in French? Should I give a graduation gift to coworker's child I've never met? What do you do when someone calls you green goblin? What occasions are appropriate for a cocktail dress? Cut your coat to suit your cloth? How do you say 'Such a Gentleman' in French? Why do you say hi to someone?