There is a book and two pens on the desk.为什么是填is 有里有个什么语法呀?

there is a key and a book There is a book,two pencils and a box on the desk.请问用There is 还是There are? there is a d< >near the window,and an english book is on it what is on the floor?there is.A、a book and a baseball and some CDsB、a book,a baseball,some CDs,C、a book,aaseball and some CDs D、a book,abaseball or some CDs There is a card between the book and the newspaper.(对a card提问 There is a book and a pen on the table改为复数句 there is a set of keys,a book and some chalk on the desk?KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK There is a book and a pen on the desk.(变为否定句) There is a book .对a提问 There __ a book and two pens on the desk.答案是is.为什么 There is (a book and two pens) in the bag.（对括号部分提问） There a book and two pens on the desk.是填is 还是are为什么 There is a book and two pens on the desk.这句话是不是错了? There is a card between the book and the newspaper.对画线的部分提问 -------- there is（ a card） between the book and thenwspaper.要对括号部分提问! __________ there a book and some pictures on the desk?是填Is 还是are呢? that book is a c__ one.we can see it here and there is there a book on the desk?