—Whose dictionary is this?
—It ________ be Sarah’s. Look! Her name is on it.
must
mustn’t
need
needn’t
Tom rushed into the house______ his mother was cooking.
Basketball has a history of nearly 300 years. Today it is still loved by______ the young___ the old.
The magazine___________ be Lily's, for we can find her name on the cover.
— Have you seen______ pen? I left one here this morning. — Is it___________ black one? I think I saw it somewhere.
Harry Potter is so interesting a book that lots of teenagers like to read _