下面是一道中考试试题:
He had a visit to Canada last month.
A. ten days
B. ten-day
C. ten-days
D. ten day
答案是B, 但我觉得上述除去C错误,其他3个答案都是正确的。由于我在语法书上查看到
a ten-day absence, a ten day absence, a ten days absence, a ten days absence.
(上述如有ten days, 也是正确的)。
请教老师剖析!
只能是B。