there is a pencil on the desk （改否定句）__ __ __ __ on the desk

there is a pencil sharpener on the desk改成疑问句 there is a pen in my pencil-box.there is an apple on the table. There is a desk in his bedroom.On--desk there is--pencil-box.填冠词 there be句型怎么 变疑问句和否定句 there is a pencil on the desk look there ___ a pencil and some books on the desk A.is B.are there is a book or a pencil on the desk如何翻译 there is a pencil-case and some There is a pencil on the desk?（改为一般疑问句并作肯定回答） What is on the desk?-------a pencil case.A.it is B.this is C.there is 把There is a ruler on the pencil-box.There is an English book under the pencil-box改为同义句 there is a ruler on the pencil box .there is an english book under it(同义句) There is a pencil There is an egg. 照样子,改写下面句子.将there are 置于句首.例如：there is a pencil on the desk.there are some pencil on the desk.1.there is a watch on the table.2.there is a knife near that tin.3.there is a policeman in the kitchen.4.there is a cup on There is a box a pencil and some books on the table (同意句转换)Some books ,a pencil and a dox( )( )the table there is a pencil on the desk （改否定句）__ __ __ __ on the desk There is a pen and a pencil 还是There are a pen and a pencil there is a ruler on the pencil-box.thereis an English book under the pencil-box.改同义句Thepencil-box_____ _____ a ruler and an English book. Is there a pencil and two boxes on the desk?的答句应该是什么?A.Yes,there is.B.Yes,there are.