eraser eraser sharpener sharpener textbook textbook Whose textbook is this? Whose textbook is this? It's mine. It's mine. English book English book Is this you English book? No, it isn't. It's Tom's. It's Tom's. Is this you glue, Ann? Yes, it's mine. Yes, it's mine. glue glue Whose dictionary is this? Whose dictionary is this? It's mine. It's mine. Is this your dictionary ? Yes, it's mine. No, it isn't. It's Peter's. It's Peter's. Whose schoolbag is this? Whose schoolbag is this? It's mine. It's mine. Is this your schoolbag ? Yes, it's mine. No, it isn't. It's Cathy's. It's Cathy's.