This is my ruler.（疑问句并否定回答）

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 this is my ruler改成否定句 This is my ruler (改为否定句) -Look!This is my ruler.-It nice.- . This is my ruler.(改为一般疑问句) This is my ruler.错在哪 This is my ruler.错在哪 改变句子,保持原意,每空格填一词【英语】 This is my ruler.This ruler is( ). this is my pen.and that ruler is () too. Whose ruler is this? Is this red ruler ( ( ) ruler is this? This is my yellow ruler请翻译成中文,急用, This is my ruler.（疑问句并否定回答） this is my ruler的同义句是什么 This is my an old ruler.改错.各位哥哥姐姐, This is my an old ruler.有一处错误请指出 This is my ruler,That's you ruler 这句话有错么?错在哪里?