The students ______ not to talk loudly in the reading-room.
--Is it _____ pen? --Yes. It' s ______ orange pen. A a; a B. an; an C. a; an D. an; a
—I really want to give up my dream of being a singer.—_________. You are so young that you still have more chances.
She _________her lovely pet dog last week. She was very sad for the _________of the dog..
The Smith are considering _________ to England because they __________ the cold weather there.
My teacher was so angry at _______________ he walked out of the office without a word.