This is___ ruler?A.I B.my C.a my D.my 请帮忙回答,并说明理由,

this is___(i) ruler.where is___(you)? This is___ ruler?A.I B.my C.a my D.my 请帮忙回答,并说明理由, This is a ruler(对a ruler提问) ----- -----this? This is a red ruler 用a red ruler 提问 1.Tom is___(I)mother's friend.2.This book isn't___(I),it is___(he) A:How are you?B:I'm fine.B说的话可换成I'm( ) ( )2.This is my ruler.换成This ruler is ( ) I have a new ruler This ruler isn't mine.I think it is ( ) A.heThis ruler isn't mine.I think it is ( ) A.he B.him C.his D.her 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 翻译：and this is a ruler Whis is this?回答A：This is ruler.B：It is a ruler. what's this?(填单词)a ruler.what's this?____a ruler.下划线填单词