Is this ruler yours?改为同义词必采

that long ruler is yours改为疑问句 Is this ( ) ruler?A.Your B.Yours C.You －Is this ruler yours Yes,please give( ) Is this ruler ____ 1、them 2、jack 3、yours Is this your ruler?改为同义句 Is this her ruler?改为同义句. This is my ruler (改为否定句) This is my ruler.(改为一般疑问句) This is a ruler 改为一般疑问句 This is a ruler改为一般疑问句 this is my ruler改为复数句肿么改啊? Is this ruler?(改为否定句）