There's a book under the desk.

There's a book under the desk.还有There’s a tow balls behind t 帮下忙啦 there is a book under the desk变一般疑问句和否定句 _________ his book?It's under the desk. Is there a book in the desk? is there a book on the desk? There are three [s ]under the tree.there【s】 a fantastic book What's under the desk?回答：(A.)It'sXXX (B.)There'sXXX What ( ) under the desk?There ( ) some boxes,but there ( ) a a book under the desk on the floor,on the floor修饰desk还是什么? Is there a ball under the desk?---______________________. Is there a ball under the desk?改错 There is a new t------ ------under the desk