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

--- 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→)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。

就是这个解释