— You’ve dropped ________ “s” in the word “necessary”.
— Oh, ________ letter “s” is doubled.

Sandra works in a big factory. She’s_________worker.         

Auatar（阿凡达）is such _________ wonderful science fiction movie that I want to see it _________ second time．

Liu Ming is _______18-year-old student. He got a gold medal in the competition.
A. a                        B. an                          C. the

On the shelf there is _________  fancy teddy bear.

It is       useless book to children. Put it into         left drawer and never read it.

-- Lily is coming by ________plane tomorrow.
-- Let’s go to ________ airport to meet her.

To do some voluntary work for the 2nd Youth Olympic Games is ______ excellent chance for us to serve our hometown—Nanjing.

—Which coat would you like?
—I’d like _________ orange one with white flowers on it.

---Where may you advise me to start my business?
---In my opinion, Yichang is __________one of __________ best places for you.