—Have a nice day to you.—＿＿＿A. Well doneB. Thank you. C. My pleasureD. Me too.

问题补充：

—Have a nice day to you.

—＿＿＿

A. Well done

B. Thank you.

C. My pleasure

D. Me, too.

答案：

A. Well done

(答案→)B. Thank you.

C. My pleasure

D. Me, too.

解析：交际用语。Have a nice day to you.表示为“祝你今天愉快”，对表达祝愿的答语一般为感谢对方，故答案为B。