Every four years athletes from all over the world the Olympic Games .A. joinB. attendC. ta

问题补充：

Every four years athletes from all over the world the Olympic Games .

A. join

B. attend

C. take part in

D. sit for

答案：

A. join

B. attend

(答案→)C. take part in

D. sit for

解析：这题考查近义词辨析：A. join加入（组织，人）B. attend参加会议，上课等C. take part in参加（活动，比赛）D. sit for参加（考试等），句意是：每四年全世界的运动员参加奥运会。选C。