Is this your ruler?〔改同意句〕

This ruler is green.同意句 Is this your ruler?改为同义句 is this your ruler 英语改否定句 Is this a ruler 如何改 Please give her this ruler同意句 -----is this your ruler? 选择题 连词成句：this.ruler.is.your.kitty Your cloth is different from mine.改同意句 What about this ruler?改同义句 this ruler is hers.改一般疑问句 this is a ruler.改复数 is this your computer 改肯定句