that is a ruler this is a girl student he is a student the woman teacher is english 改复数句

This is a long ruler,and that is a short( )A.it B.one C.ruler That's a ruler.对 a ruler 提问.Is this an apple?改为复数句子. This is a ruler and That a ruler ,too和That is aruler and This is a ruler,too那个对,为什么 This is a ruler(对a ruler提问) ----- -----this? That is a ruler 回答 this ruler is longer than that one This is a red ruler 用a red ruler 提问 That ruler is a (rectangle) 括号提问 This is a red strawberry 改复数 This is a blue jacket.And that ruler is bThis is a blue jacket.And that ruler is blue.为什么要用a blue和blue? _____ a ruler ? yes,____. A.Is this, it is B.Is that,it‘s C.this is, it's This is an orange and that is a ruler. 这里的and是什么意思? This is a ruler 改为一般疑问句 This is a ruler改为一般疑问句 Is this a ruler.(做否定回答) is,a,this,red,ruler 连成句 this is a ruler 改为复数 this ruler is-----?a:myb:mine this is a ruler.改复数