The Olympic Games are held .
A. for four years
B. each four year
C. every four years
D. every fourth year
网友回答
A. for four years
B. each four year
(答案→)C. every four years
D. every fourth year
解析：考查固定短语。句意“奥运会每四年举办一次。”every+数字+years意为“每几年”；every other+数字+years意为“每隔几年”。故选C。