----Look at____book on the desk.Is it_____useful one

-----book on the desk is ----useful one The bag in the desk is ____older than the one on the desk. A The book on the desk is newer than in the desk. A.the one B. The book on the desk is newer than __ in the desk.A.the one There is only one book on the desk反义疑问句 There are many pens on the desk,which one is Is ____ book on the desk ___ useful one look!() eraser is on the desk,whose is it?A .A B.An C .The D is here on desk the here is only one book on the desk.(就划线部分提问）only one划线 there are two books on the desk.one is comic,the other is po The bag on the desk is heavier than the red one.对划线部分提问