Is this eraser yours or Jane's?

Is this eraser yours or Jane's? This isn't Jane's eraser. ( )is white. 根 ( ) eraser is on Jack's desk,is it yours? HERE IS YOUR ERASER.()(),JANE 1.This book is mine.2.That eraser is yours.3.These boxes are This is eraser,eraser is in Is this dictionary yours or his?she a （）storybook is yours,this one or that one? Excuse me,who's is this eraser?改错 is this your eraser? ( ).it's my sharpen This is（）（he）eraser.It’s not my eraser. that's an eraser ______ _____an eraser?(一般疑问句) this is a cup