Are these cars?作肯定回答

Are these cars?作肯定回答 Are these toy cars 做肯定回答 Are these his pictures?作肯定回答 Are these toys yours?（作肯定回答） are these/those your rulers?(作肯定回答) Are these your sisters?（作肯定回答） Are these your lunchboxes.（作肯定回答） They are English books.（改为一般疑问句） Are these cThey are English books.（改为一般疑问句）Are these cars?（作肯定回答）He is in Class1,Grade7,画线部分是Class1,Grade.（对画线部分进行提问）These are cars in Are these cars or buses?回答 are these 做肯定回答 These are nice pictures.变为一般疑问句,并作简要的肯定回答和否定回答 These are my friends怎么改为一般疑问句?并作肯定回答? These postcards are great.(画线提问)不对，应该是（改为一般疑问句并作肯定回答） These are my grandparents?(改为一般疑问句并作肯定回答） these are nice pictures改为一般疑问句并作肯定或否定回答 these are nice pictures改为一般疑问句并作肯定或否定回答 Are these keys in the drawer?(作肯定和否定回答) these are mu sisters 改为一般疑问句并作肯定回答