---I will go to Dalian for a holiday.---.A. Thank you.B. Sorry to hear that.C. Have a good

问题补充：

---I will go to Dalian for a holiday.

---.

A. Thank you.

B. Sorry to hear that.

C. Have a good time.

D. Enjoy yourselves.

答案：

A. Thank you.

B. Sorry to hear that.

(答案→)C. Have a good time.

D. Enjoy yourselves.

解析：Thank you.谢谢你；Sorry to hear that.很遗憾听到那个消息； Have a good time.祝你玩得愉快； Enjoy yourselves.感到愉快。句意：我要去大连度假。结合语境可知选C最符合语境。