1. —I’m terribly sorry to have put you through so much trouble.
—________. I know you didn’t mean to.
A. Forget it B. No trouble C. All right D. You’re welcome
2. South Korean rapper Psy’s hit song “Gangnam Style” made _______ history on Dec. 20th as _______ first ever video on YouTube to reach 1 billion views．
A. the; the B. / ; the C. a ; a D. / ; a
