"promptly complete" is correct and usable in written English.
It means to finish something quickly and without delay. Example: Please promptly complete the report by the end of the day.
"We believe that time is of the essence, and are prepared to move forward expeditiously by committing all necessary resources to promptly complete a transaction".
If the member is not assigned or attached, or not available to respond (e.g., retired, in a prisoner of war status, or in a missing in action status), the commander will promptly complete Section II of DD Form 2654 and attach appropriate documentation supporting the determination.
Promptly complete the transfer of the sample to the funnel in the jacket with portions of the pre-equilibrated isooctane, warming the beaker, if necessary, and using a total volume of just 50 ml of the solvent.
Dorsey promptly completed a 10-yard pass to tight end Jeremy Shockey, who fumbled the ball forward 3 yards to Beard.
Romo promptly completed his next eight passes, including a second-quarter touchdown strike to tight end Jason Witten for the first score of the game.
So that left F.S.U. with redshirt freshman Clint Trickett, who promptly completed his first three passes and led the Seminoles into field goal range.
We look forward to receiving F.C.C. approval and promptly completing the transaction so that we can begin implementing our plans to deploy an advanced Sprint network that supports innovative devices and service packages tailored to the rapidly expanding mobile needs of U.S. consumers".
Garcia promptly completed his deepest pass of the game, a 38-yard connection to wide receiver D.L. Moore.
I promptly completed the ballot and mailed it in... and now wonder if it will get there in time to be counted.
To improve the quality and effectiveness of data bases by ensuring that all States and inspectors accurately and promptly report complete safety information.
(VI, B) At the time of access to the house of correction, diabetics should promptly have a complete case history taken and undergo a complete examination on the part of healthcare personnel.
