Mrs.Green tells me that she is going to have a_____hoilday next month.

问题描述:

Mrs.Green tells me that she is going to have a_____hoilday next month.
A.seven days
B.seven--days
C.seven—day

C为什么/这个seven-day是做holiday的定语 b肯定是错的,当中有横杠后面不能加复数 a不能形容名词