.

-- This book is _________ more useful for us students．

-- Yes, but it is _________ too difficult．

       A．quite; quite         B．much; rather    C．rather; quite    D．quite; much

“This book is ______ more useful for us students.” “Yes, but it is _______ too difficult.”

—This book is ______ more useful for us students.

—Yes, but it is _____ too difficult.

—This book is ______ more useful for us students.
—Yes, but it is _____ too difficult.

“This book is ______ more useful for us students.” “Yes, but it is _______ too difficult.”