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If I had known about this computer program, a huge amount of time and energy       .

A．would have been saved     B．had been saved

C．will be saved    D．was saved

If I had known about this computer program, a huge amount of time and energy       .

A．would have been saved                          B．had been saved

C．will be saved                                          D．was saved

 If I had known about this computer program, a huge amount of time and energy       .

       A．would have been saved                     B．had been saved

       C．will be saved                                       D．was saved

________ about this computer program, a huge amount of time and energy would have been saved.（ ）

A. Had I known　　 B. If I knew　　 C. If I should know　 D. Would I know

江蘇省泰州市2011屆高三第一次模擬考試

_____________ about this computer program, a huge amount of time and energy would have been saved.

A. Had I known    B. If I knew            C. If I should know      D. Would I know