— Mum I won first place in the competition. — A. That’s all right. B. Really? You are luc

问题补充：

— Mum, I won first place in the competition. —

A. That’s all right.

B. Really? You are lucky.

C. You must be joking!

D. Congratulations on your success.

答案：

A. That’s all right.

B. Really? You are lucky.

C. You must be joking!

(答案→)D. Congratulations on your success.

解析：考查交际用语。A没有关系；B真的吗？你真幸运。C你一定在开玩笑。D祝贺你的成功。根据前句可知I在比赛中获得了第一名，那么后者应该表示祝贺，故D正确。