The phrase 'will only be completed' is correct and can be used in written English.
It is mainly used when referring to a task, activity, or event that is still in progress, and will not be finished until some point in the future. For example: The construction project will only be completed next year.
But construction will only be completed in 2007.
The first, sufficiently rigorous evaluation will begin in March, and will only be completed and released two years later.
Those matches, which will only be completed on Sundaymorning, and all of which are separated by just one hole, will be crucial to the singles dynamic.
Niki set about establishing the organisation as a non-profit foundation, a lengthy process that will only be completed this month.
Because the study that will include information about patient outcomes will only be completed when ezetimibe comes off patent, we will not know how it actually affects risk for a few more years.
They will only be completed at the last minute following wrangling over whether the cost should be covered by the public purse or the stadium's owners, top-flight side Internacional.
The decolonisation of Mauritius will only be complete, the Hague-based judges said, when the Chagos Islands are returned to Mauritian rule.
However, the final register will only be complete once the 4 million people have appealed against their exclusion from the list and had a chance to prove their claims to citizenship.
Mariano Rajoy, the leader of the opposition Popular Party, called the announcement "good news," with the caveat that "the tranquillity of Spaniards will only be complete when the full dismantling of ETA has occurred".
The work will only be complete when the postage circulates, and death and remembrance enter directly into the lives of anyone who sends or receives a letter.
Like the generations before us, this national park will only be complete with the help and determination of the American people.
