Lisa and Mary are talking.一般疑问句

Lisa and Mary are talking.一般疑问句 Who are Lisa and Tim talking ____? 一：Mary and Lisa are my good friennd.改成特殊疑问句 mary and you are students变一般疑问句 Tom and Mary are doing the sports.变一般疑问句 Both Mary and Kitty are my friends改为一般疑问句.是改为Are both MARY a ben and tim are talking to a polecewoman .改为一般疑问句 ____ ben a Now Bobby and Sam are talking.改成一般疑问句和否定句 Lisa and Bill play ping-pong(该一般疑问句) Mary likes singing and dancing.一般疑问句 一般疑问句肯否回答Alice and Mary are my friends mary and i are good friends.改成一般疑问句怎么改?