This is ______ eraser and that’s _____ ring .
—Need I wash your car after repairing it? —Yes, that would be much _.
—When will he leave for Shanghai? —As soon as he _ his work.
Tom’s mother is busy _____ breakfast for Tom.
—Could I use your eraser for a while? —Yes, of course you _.
—Do you know the girl __is talking to our English teacher? —Yes. She’s my sister.