问题
选择题
We have already enjoyed our _____ spring vacation in Chuxiong. [ ]
A. ten day's
B. ten day
C. ten-day
D. ten-days
答案
答案：C
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We have already enjoyed our _____ spring vacation in Chuxiong. [ ]
A. ten day's
B. ten day
C. ten-day
D. ten-days
答案：C