—Good news.We will have a holiday.
--I’ve heard of it.But it’s ing in .
A. three days;three days’ time
B. three days’;three days’
C. three-day;three days
D. three days;three-day time
网友回答
A. three days;three days’ time
B. three days’;three days’
(答案→)C. three-day;three days
D. three days;three-day time
解析：C 数词+名词作定语的固定句型是“基数词-day/ hour/ minute等+名词”。“一个三天的假期”a three-day holiday；“三天后”in three days，表将来。故选C。