is this your ruler? 改为复数句 Are these her erasers?改为单数句

Is this your ruler?Yes._________. Is this your ruler?改为同义句 Is this your ruler?作肯定回答 is this ruler your?yes .找出错误 （）（）,is this your ruler?No. And is this your ruler的汉语意思 your is brother short this ruler for怎么连成一句话 连词成句：this.ruler.is.your.kitty Whose ruler is this? Is this red ruler ( ( ) ruler is this? What () is your ruler this isn't your ruler that ruler is------------he her hers its Is this ( ) ruler?A.Your B.Yours C.YouIs this ( ) ruler?A.YourB.YoursC.YouD.You're Is this ruler ( No,it is( ).A your;hers B hers;your C yours;her Is this your ruler? No,it isn't.（I）( )is atIs this your ruler?No,it isn't.（I）( )is at home. this is( )ruler.写什么 This ruler is for Gao