Social customs and ways of behaving are changing. Things （ 1 ） were considered impolite many years ago is now acceptable. Just a few years ago, it was thought to be impolite behavior for a man to smoke in the street. No man who thought of himself as being a gentleman （ 2 ） a fool of himself by smoking when a woman was in the room.
Customs （ 3 ） from country to country, but the important thing （ 4 ） is not to do anything that might make other people feel（ 5 ） to keep them from feeling foolish, especially if they are your guests. You are expected to find a way.
1. ____

A.uncomfortable

B.would make

C. to remember

D.that

E. vary