摘要： The Olympic Games are held every four years.
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The Olympic Games are held _____.
A. for four years B. each four year
C. every four years D. every fourth year
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The Olympic Games are held _____.
A. for four years B. each four year
C. every four years D. every fourth year
查看习题详情和答案>>The Olympic Games are held _____.
A．for four years B．each four year
C．every four years D．every fourth year
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