Are you in ( )( )class?括号里应填什么

Which class are you in?What class are you in?这两个句子有什么区别? What class are you in? Are you in class ten What class are you in Which class are you in? i am in (class one ,grade one )对括号里提问 ( ) ( )are you( i want what class are yon in?与 which class are you in?有何区别?回答时又什么不同 Are you in class two?( )I’m in Class One. In a geography class ,we are ( )( )a map of China两个括号里填什么单词? They are in the s_ class.(括号里该填什么?) In a history class ,we are ( )( )the past两个括号里填什么单词? －What class are you in,Mike?