Who (have) a red ruler

Who (have) a red ruler A red ruler This is a red ruler 用a red ruler 提问 Who has a ruler? It is ( )ruler. A.a long red ruler B.a red long ruler C.long I she is a teacher I like red you have three ruler who have a red rope?twenty biys have a red rope. is,a,this,red,ruler 连成句 I have a new ruler Do you have a ruler?. they have a ruler改成对a ruler提问 This is a red ruler对划线部分提问