2) Coloque (f) para expressões “formais” e (i) para informais informal: a) ( ) Hello! How are you? b) ( ) What's up? c) ( ) Good bye, teacher! d) ( ) See you! *
(A)F, F, F, I
(B)I, F, F, I
(C)F, I, F, I
(D)I, I, F, F