Are these your sisters?（作肯定回答）

Are these your sisters?（作肯定回答） Are these your lunchboxes.（作肯定回答） these are mu sisters 改为一般疑问句并作肯定回答 are these/those your rulers?(作肯定回答) Are these toys yours?（作肯定回答） Are these his pictures?作肯定回答 Are these cars?作肯定回答 Is this a car(作bou定回答)~2.Are these your books?(做肯定回答） 3.That Are these your pants?的肯定回答 Are these your cousin?做肯定回答 Are these your parents 做肯定回答 are these your pens?做肯定回答