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Later, we might have a cola or two to help fight//fight against//fight off the afternoon lethargy.

Hi,

Which bolded parts should I use to fit in the above? Is it possible that all do?
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AngliholicLater, we might have a cola or two to help fight//fight against//fight off the afternoon lethargy.

Hi,

Which bolded parts should I use to fit in the above? Is it possible that all do?
I would be OK with "fight" or "fight off" but not with "fight against".
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Thanks, Ray.

But could you give me your reason because I don't see why "fight against" can't do the trick?
AngliholicThanks, Ray.

But could you give me your reason because I don't see why "fight against" can't do the trick?
As I often point out I'm not a grammarian, so I can't cite chapter and verse from a grammar text. However, "fight against" in this context is just not something I would ever say or expect to hear. It could be just a convention. I'll have to defer to one of the grammar experts for a further explanation.