It is a useful book , I bought it in___ Xinhua Bookstore

It is a useful book , I bought it in___ Xinhua Bookstore It is ( ) useful book. It is useful book O_____ ,it is a useful book How useful a book it is! This is a book.I bought it.改为宾语从句 It is ____ useful book.I borrowed it yesterday. I ( )a new dictionary.It is very useful.A.bought B.have boug （ ）useful book it is what a useful book it this is the ____(useful) book l bought in this bookstore. I bought a-------(cook) book in bookstore.就填cook