These aerphones are Lucy's.They are his.这句话哪里错了

These aerphones are Lucy's.They are his.这句话哪里错了 Are these Are these your trousers?Yes,these are, these are his shoes.( )are these ()? Are these your Are these your pencils? These bags are heavy. Are these pens ___? Are these shoes? These are my friend how much are these are these( )tickets? These are ()() my books. are these ( )(watch)yours? Are these books ( )(your)? who are these? WHAT ARE THESE?意思 what are these ones?