There are a book and two pencils on the desk.改错

There are a book and two pencils on the desk.改错 There is a book,two pencils and a box on the desk.请问用There i There are a book and two rulers on the desk句子改错 There( are )(a book)and (two pens)(on) the desk There are a book and two pens on the desk . Look!There _____(be) a book and two pencils on the desk.横线里是 There ______ a book, two pens and three pencils on the desk. There ___ a pen and two pencils on the desk.用is还是are~ There ( )an Englisn book and two pencils on my desk .用is还是 a there were a book and two pens on the desk There a book and two pens on the desk. There is a book and two pens on the desk.