The fire – fighters made every effort to put off the flames. The building burned down completely.
A.Had it not been for the fire – fighters’ every effort, the building would have burned down completely.
B.Since the fire – fighters made every effort to put off the flames, the building burned down completely
C.The building burned down completely though the fire – fighters made every effort to put off the flames.
D.Making every effort to put off the flames, the fire – fighterscompletely burned down the building.

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