There is a pen and an eraser in the box否定句和一般疑问句和a pen and a

There is a pen and an eraser in the box否定句和一般疑问句和a pen and a There is a box and a pen in the room.改成一般疑问句是怎样的 There is a pen and 2 pencils in the pencil-box.(就a pen and 2 There is _____　a pen, an eraser and some pencils in her penc Is there a pen two eraser in the box.___there(填be动词） there're some books and a pen in the bag 改为一般疑问句《 》there 《 》 There is two pencils and a pen in the box改错 There is ( ) “P",( )“E”and ( )"N" in pen.(a/an) There is a book and a pen on the desk.(变为否定句) What ________in my pencil-box?There is a pencil,a pen and an there is a pen in my pencil-box.there is an apple on the tab Is there a pen or a pencil in the box?是选择疑问句吗?