（ ）12. --- Did you hear the serious accident that happened at a university in America?
--- Yes, I was shocked when I heard it.
A. very happy B. very excited C. very surprised D. very interested
（ ）13. In addition, you can learn English well by listening to English songs.
A. However B. Therefore C. Instead D. Besides
（ ）14There is no concert ticket available.
A. free of charge B. of great value
C. that you can get D. made from paper
（ ）15. Debbie was ahead of others in the 100- meter race.
A. in front of B. at the back of
C. worse than D. the leader of
