are the keys on the sofa?no,they aren is.they are on the tab

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》》》