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- How often are the Olympic Games held?

-             four years.       

A. Every     B. Each      C. In      D. For

- How often are the Olympic Games held?

-             four years.       

A. Every     B. Each      C. In      D. For

- How often are the Olympic Games held?

-             four years.       

A. Every     B. Each      C. In      D. For

- How often are the Olympic Games held?

-             four years.       

A. Every     B. Each      C. In      D. For

- How often are the Olympic Games held?

-             four years.       

A. Every     B. Each      C. In      D. For