I will go to Hong Kong to do some sightseeing.A. No I won t .B. No problem .

问题补充：

--- I will go to Hong Kong to do some sightseeing.---- .

A. No , I won t .

B. No problem .

C. Have a good time .

D. It is kind of you

答案：

A. No , I won t .

B. No problem .

(答案→)C. Have a good time .

D. It is kind of you

解析：No , I won t .不，我不会的； No problem .没问题； Have a good time . 祝你玩得愉快；It is kind of you你太好了。根据上文，我要去香港观光。可知选C最符合语境。