The Olympic Games is held .
A. each four years
B. every four years
C. each four year
D. every four year
网友回答
A. each four years
B. every four years
C. each four year
D. every four year
解析：考察固定用法。Every four years=every fourth year每四年；结合句意可知B正确。句意：奥运会每四年举行一次。