You probably have noticed that people express similar ideas in different ways, depending on the situation they are in. This is very (36)________. All languages have two general levels of (37)________: a formal level and an informal level. English is no (38)________. The difference in these two levels is the situation in which you use a (39)________level. Formal language is the kind of language you find in textbooks, (40)________books, and in business letters. You would also use formal English in compositions and (41)________that you write in school. Informal language is used in conversation with (42)________, family members and friends, and when we write (43)________notes or letters to close friends. Formal language is different from informal language in several ways. First, formal language tends to be more polite. (44) ________________. For example, I might say to a friend or family member, "Close the door, please, "(45) ________________. Another difference between formal and informal language is some of the vocabulary. (46)________________. Let’’s say that I really like soccer. If I’’m talking to my friend I might say "I’’m just crazy about soccer!" But if I were talking to my boss, I would probably say "I really enjoy soccer."