Is this your eraser?

is this your an eraser? is this your eraser?【同义句】 A:( ) me,is this your eraser? 前面是Is this your eraser Is this your eraser怎么回答 is this your eraser的同义句 Is this your eraser?(同义句）Is this___ ____? is,this,your,eraser,（同义句转换） Is this your an eraser?哪错了? is this your eraser? ( ).it's my sharpen This is eraser,eraser is in Excuse me,is this your eraser,Eric?( )eraser on the desk?Oh,