those are her cousins （改为单数形式)

Those are her photos改为单数形式~ Are these your cousins改为单数形式 those aren't my cousins改为单数形式 Are those her erasers改为单数句 Those are rulers 改为单数形式 快 are those japanese cars?改为单数形式 Those are erasers 改为单数形式 Those are oranges 改为单数形式 Those are gloves改为单数形式 Are those his friends?改为单数形式 Those are my sisters改为单数形式是? Those are apples.谁会改（改为单数形式）