your keys not on the floor 还是your keys aren't on the floor

your keys not on the floor 还是your keys aren't on the floor Your keys are on the floor,you must put away them改错 please don't ( t )your books on the floor .It Don‘t p（ ）your bag on the floor there aren't any t（） on the first floor a set of keys 后面be动词用啥 A set of keys ( )(be) on the floor There aren't a_____ volleyballs on the floor. A set of keys __ (be) on the floor.怎么填? Are your keys on the sofa?作否定回答 Your pen is __________.A.under the chair on the floor B.on t The hot tiles on the floor will melt your 是on fifth floor还是on the fifth floor?