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The editor-in-chief asked me to write another article for them，      about how to prevent Bird flu．

A．that             B．one             C．it                D．which

The editor-in-chief asked me to write another article for them，      about how to prevent Bird flu．

A．that           B．one            C．it             D．which

The editor-in-chief asked me to write another article for them， 　　　　about how to prevent bird flu.

A. that      B. one          C. the one     D. those            

The editor-in-chief asked me to write another article for them， 　　　　about how to prevent bird flu.

A. that      B. one          C. the one     D. those