there---a ruler,a cup and some books on the desk.-( )letters are there in the box?-There are more than 500-Is there enough butter in the bottle?-No,there is ( )left.

there is a ruler two pencils There ________ a ruler and two pens on the desk. there is a u in the world ruler. ( ) you( ) a ruler? A red ruler Is it a ruler? There is a ruler in the bag.ruler画线,对划线提问：（）（）in the bag? It is ( )ruler. A.a long red ruler B.a red long ruler C.long ruler D.red ruler there two pencils,a pen,a rubber and a knife in it.And there is a long ruler What _______ (be) on the desk just now?There ______ (be) a pen and a ruler. there is -------r and -----uin the word ruler A an,an Ban,a C a,a D a ,an There is only one ruler in the pencil-box 改为同义句There is ______ _______ a ruler in the pencil-box This is a ruler(对a ruler提问) ----- -----this? This is a red ruler 用a red ruler 提问 they have a ruler改成对a ruler提问 That is a ruler 回答 I have a new ruler Who (have) a red ruler