----I’ m flying to Hainan Island for my vacation this weekend.----Wonderful! A. Have a goo

问题补充：

----I’ m flying to Hainan Island for my vacation this weekend.

----Wonderful!

A. Have a good time!

B. I hope so.

C. Why not?

D. I don’t think so.

答案：

(答案→)A. Have a good time!

B. I hope so.

C. Why not?

D. I don’t think so.

解析：Have a good time!祝你玩得愉快；I hope so.希望如此；Why not? 为什么不呢；I don’t think so.我不这样认为。句意：这个周末我要乘飞机去海南岛度假。——太棒了！祝你玩得高兴。可知选A最符合语境。