对The clock is on the desk中对on the dest提问

对The clock is on the desk中对on the dest提问 A clock is on the desk.对A clock提问 the clock is on the desk.对画线部分提问 The clock is on the desk.（对画线部分提问） His backpack is on the on the desk对on the desk画线提问 There is (a clock )on the desk.对括号里的部分提问. (the watch) is on the desk.对括号部分提问 对the book is on the desk.怎么提问 the tv set on the desk is new对on the desk 提问 The book on the desk is mine.对 on the desk 提问 The computer is on the desk.对on the desk进行提问 The cat is on the desk 对on the desk提问