—__________ are those pants?—They are 100 yuan.
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 _