there is a book和there is one book

there is a book和there is one book There is a book .对a提问 there is a key and a book 1.There is a person who is reading a book和There is a person There is a person who is reading a book和There is a person re Is there a book in the desk? There is a book no the There is a book.改为复数形式 is there a book on the desk? there is a book 提问数量 there is a book 改成否定句 Is there a maths book in your