单数句: 1.Is the cat under the chair?No,it isn't.It is behind the door. 2.Is the photo in the drawer?No,it isn't.It is on the wall. 复数句: 1.Are the apples in the basket?No,they aren't.They are on the desk. 2.Are the books in the bag?No,they aren't.They are under the bed. 哈哈,不懂问》》》