1) Who studies Russian history at the Correspondence Institute?
2) Whose brother studies Russian history at the Correspondence Institute?
3) What does my younger brother study at the Correspondence Institute?
4) Where does my younger brother study Russian history?
5) Which history does my younger brother study?
6) In which Institute does my younger study Russian history?
7) Is this brother younger or older than me?
8) What does my younger brother do at the Correspondence Institute?
9) Does my younger brother study at the Correspondence Institute, or not?
10) My younger brother studies Russian history at the Correspondence Institute, doesn't he?