－－- Dad, when will you be free? You agreed to go to the seaside with me four days ago. －－- I’m sorry, Jean. But I think I will have a （）holiday soon.

--- Dad, when will you be free? You agreed to go to the seaside with me four days ago. --- I’m sorry, Jean. But I think I will have a （）holiday soon.
A.four-days
B.four-day
C.fourth day
D.four day
正确答案：B