问题补充：
— I’m leaving for Qingdao tomorrow.
—
A. Congratulations!
B. I’m sorry to hear that.
C. You’re welcome!
D. Have a good trip!
答案：
A. Congratulations!
B. I’m sorry to hear that.
C. You’re welcome!
(答案→)D. Have a good trip!
解析：Congratulations!祝贺你；I’m sorry to hear that. 很遗憾听到那个消息；You’re welcome! 不客气；Have a good trip!祝你旅途愉快。根据上文，明天我要动身去青岛了。可知选D。
