28.--How often are the Olympic Games held? -- four years. A.Every B.Each C.In D.For 查看更多

 

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---How often are the Olympic Games held

---_____four years.

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

 

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---How often are the Olympic Games held?  ---_____four years.

A.Every

B.Each

C.In

D.For

 

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