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Hello Teachers,

Please suggest which of the following sentences is more natural and grammatically correct?

1. We will notify you once we complete the changes.

2. We will notify you once we have completed the changes.

3. We will notify you once the changes are complete.
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They are all perfect. They all mean essentially the same thing.
I'd use the third, just because it's the shortest, I suppose.
CJ
Comments  
Thanks much, CalifJim.