they are going to visit Sudney ____ChristmasA)AT B)IN C) FOR D) ON 请问为什么选FOR

they are going to the THEY ARE GOING TO A What are they going to do? They are going to drive the car. 用They are going to.造句 When are they going to finish it? they are going to fish. 翻译英文 what are they going to eat? where are they going to skate? How are they going to the zoo? what are they going to have? They are going to have dinner toerther . what movie are they going to they are going to go mountain climbing Where are they going to bay where are they going to see thebirds? They are going to后面加不加ing What movic are they going to