Heien is pen is on the desk怎么提问

Heien is pen is on the desk怎么提问 the pen on the desk is mine对on the desk提问怎么答? My pen is on the desk.对on the desk提问 There is a pen on the desk.(对a pen 提问.) Is that your pen on the desk? there is a pen on the desk? the new pen is on the dask.向on the desk提问 this is a （ruler) 对括号提问 the pen is （on the desk） 对the book is on the desk.怎么提问 按要求改写下列句子.Her pen is on the desk【对画线部分提问】.---------------【注： This is not her pen.()(her) is on the desk 改写同义词The pen is on the desk