This is my ruler.(改为同义句）No,it isn't.It's________

This is my ruler (改为否定句) This is my ruler.(改为一般疑问句) It's my pencil case 改为否定句This is her ruler 改为一般疑问句 This is my ruler中的my ruler怎么提问? This is my ruler.(划线部分提问)my ruler画线 Is this your ruler?改为同义句 This is a ruler 改为一般疑问句 This is a ruler改为一般疑问句 Is this her ruler?改为同义句. this is a ruler 改为复数 Is this ruler?(改为否定句） This is his ruler.(改为否定句) This is my long ruler.改为一般疑问句,后作肯定回答 回答：Is this my long ruler?Yes,it is. that is my ruler改为否定陈述句 This is my ruler.(改为同义句）No,it isn't.It's________ this is my ruler改成否定句 -Look!This is my ruler.-It nice.- . This is his ruler(改为复数句) That is my key(改为复数句) These are his brother