问题补充：
The Chinese government has made the Mid-Autumn Festival a legal holiday, people will have a day off．
A. when
B. which
C. where
D. what
答案：
(答案→)A. when
B. which
C. where
D. what
解析：考查定语从句的引导词。解题的关键是先找对先行词，再把先行词代入从句，看其在从句中作什么成分。此句的先行词是holiday，把holiday代入从句，如下：people will have a day off during the legal holiday, holiday前加了介词during，可知先行词在定语从句充当状语，故选A。句意：中国政府已把中秋节定为法定假日，人们可以休息一天。
