The Chinese government has made the Mid-autumn Festival a level holiday, people will have a day off.
A. when
B. which
C. where
D. since
网友回答
(答案→)A. when
B. which
C. where
D. since
解析：
这题考查非限制性定语从句，先行词是a holiday，而且定语从句中缺少时间状语，所以用我很，句意是：中国政府使中国成为统一的假期，这时人们可以放一天假。选A。