用方框中合适的词将下列对话补充完整
选项：mine her yours hers your
1、Is this ____eraser,Mike?
No,it isn't.____is white.Ask Kate.Maybe(也许）it's____
2、Are these your rulers?
No,they aren't.They are not ____.Look,Jane is over there.Ask ____.Maybe they are____.
3、Excuse me,Cindy.Is that schoolbag ____?
Yes,it is.It's____