问题补充:
The important sports festival, the Olympic Games, held
every years.
A. is, five
B. are, three
C. is, four
D. are;two
答案:
A. is, five
B. are, three
(答案→)C. is, four
D. are;two
解析:句意:每四年举行一次的奥运会是非常重要的体育节日。根据语境,句子用一般现在时,the Olympic Games作为主语,谓语动词用is,every four years=every other three years每四年,即每隔三年,故选C