The phrase "completed thoroughly" is correct and usable in written English.
It is typically used to describe something that has been done with care and attention to detail. For example, "The report was completed thoroughly and all the criteria were met."
In a December interview with Florida's News-Press, Rubio defended Mueller's reputation and said he believed the "best thing" would be for the investigation to be completed "as thoroughly and as completely as possible".
The goal deflated a hard-working makeshift Gretna side and the defeat completed a thoroughly miserable week for the team stranded at the bottom of the SPL.
But Defense Secretary Donald Rumsfeld's bizarre responses the other day to questions about that very issue were a timely reminder of why this investigation needs to be completed promptly, thoroughly and fairly.
The KWL activity was completed most thoroughly, with the highest participation rate of 92.31 % achieved by class H and an average participation rate of more than 50%% across classes.
Every album was available in multiple formats, and soon Oink had complete, thoroughly documented discographies for any musician you could care to name.
Once the pressure washing is complete, thoroughly rinse on the dirt away from the clean concrete.
The scriptures indicate that one may study the Holy scriptures so: "That the man of God may be perfect (complete), thoroughly furnished unto all good works".
All Scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness, that the man of God may be complete, thoroughly equipped for every good work.
There was still time for Barnes and Gayle, with a cute hooked finish, to complete a thoroughly resounding victory over an out-of-sorts Leeds.
