С. : alice and her classmates are going to have a halloween party. what have the children done? what haven't they done ? make up sentences. use the correct verb form. 1.polly/bring/just/coca-cola. 2.ron/buy/yet/his halloween costume. 3.they/buy/yet/flower? . 4.they/make/yet/sandwiches? 5.they buy/just/hot dogs. 6.andrew/bring/already/a dvd player 7.they/decorate/already/the room