同义句转换：Is this your knife?Is this ( ) ( 说明白为什么

Is this your pen?同义句转换 is,this,your,eraser,（同义句转换） 同义句转换：Is this your knife?Is this ( ) ( 说明白为什么 同义句转换This is my book. whose jacket is this 同义句转换 同义句转换This match is exciting. whose is this comb?同义句转换 This subject is interesting同义句转换 Is this your ruler?改为同义句 is this your eraser的同义句 is this your book?的同义句 Is this your book 改成同义句 Is this your phone?改为同义句 is this your eraser?【同义句】 is this your cap?的同义句 This is your mother改同义句 改为同义句 Is this your ball? Is This your photo改为同义句