Is the cat yours?作否定回答

Is the basketball yours(否定回答） Is the yellow coat yours?(否定回答) the cat is white的肯定回答和否定回答 is that the library?作否定回答 This model plane is yours.一般疑问句并作否定回答 ls the basketball yours (做否定回答) Is the dress more beautiful than yours?（做否定回答） Is the baseball on the sofa?(作否定回答) Is the pencil case under the sofa? 作否定回答 1】Is the book on the desk?(作否定回答) Is there a hill in the picture?作否定回答 Is the sweater seven dollars?作否定回答