用适当的人称代词或物主代词填空
Henry:Ican'tfind___book.Can___help___you?
Colin:Sorry,___can't.Iamlookingfor___knife.
Henry:Thereisaredknifeoverthere.Is___yourknife?
Colin:No.___isNancy's___knifeisred.
Henry:Colin,I'mlateforschool.Help____
Colin:Ok.Let___help___
Henry:Thank___verymuch.