—Joy how was your holiday?—I had a great time.We went scuba driving in Hainan Island.—Wo

问题补充：

—Joy,how was your holiday?

—I had a great time.We went scuba driving in Hainan Island.

—Wow! 

A. That sounds really cool!

B. I’m going to Hainan Island,too.

C. How cool you are!

D. Cheers!

答案：

(答案→)A. That sounds really cool!

B. I’m going to Hainan Island,too.

C. How cool you are!

D. Cheers!

解析：选项A表示对人家所讲事情的评价；选项B表示说话人的打算、计划；选项C表示对他人的赞美；选项D为祝酒用语。根据对话的语境可知,说话人是对对方所讲事情的评价,于是本题的正确答案选A。