Are your pencils in the desk?【肯定回答】
NO,___ ___.
Those are books.【改為單數(shù)句子】
___ ___ a book.
His book is in the backpack.（對(duì)in the backpack提問(wèn)）
___ ___ his book?
They are his sisters.(否定句）
They ___ ___ his sisters.
Is Tom your brother?(肯定回答）
Yes,___ ___