I am going to Hawaii with my aunt this month for my holiday.-- !A. Have a good tim

问题补充：

--- I am going to Hawaii with my aunt this month for my holiday.

---- !

A. Have a good time.

B. Best wishes to them .

C. Thank you very much.

D. It s OK

答案：

(答案→)A. Have a good time.

B. Best wishes to them .

C. Thank you very much.

D. It s OK

解析：Have a good time祝你玩得愉快； Best wishes to them .给他们最好的祝福；Thank you very much. 非常感谢你；It s OK不错。根据上文，这个月我要和我的姑姑去夏威夷度假。结合语境可知选A。