1. ---- Mr. Wang hurt his arm yesterday when he did sports in the gym.
---- Really? ________. （原创）
A. I’m terribly sorry. B. Who did that?
C. How did that happen? D. What’s wrong with him?
2. Having ____ no-car day would be a good way of encouraging ____ low-carbon lifestyle.
A. a ; a B. a; the C. the; the D. the; a
