Which form and class are you in?

Which form and class are you in? Which class are you in? 翻译：Which class and grade are in? which class are you ni和which class you are in 哪个对? What class are you in?还是Which class are you in? Which class are you in?和What class are you in的区别 Which class are you in?What class are you in?这两个句子有什么区别? 你是哪班的?到底是which class are you in还是what class are you in? 你是哪班的?到底是which class are you in?还是what class are you in? which class are you in 翻译成中文 --Excuse me,May I know which class you are in? Which class are you in?I am in___