The phrase "primary task is" is correct and usable in written English.
For example, you might say "My primary task is to complete the project on time."
Our greatest primary task is to put people to work.
"Fifa's primary task is to prevent match-fixing.
But he also said in that speech: "Our greatest primary task is to put people to work".
His primary task is to help farmers improve the productivity and quality of their farms and to reduce environmental harm.
"Despite the public's perception, there is no group of service members whose primary task is death notification," Mr. Sheeler writes.
It was an odd role for the comptroller, whose primary task is managing the Pentagon's $400 billion a year budget.
Alperovitz's primary task was devising how to distribute the papers to as many news organizations as possible.
The euro itself would be finished; after all, its primary task was to break the Bundesbank's dominance in monetary policy.
Then they will remember the days when Congressional Democrats' primary task was not to pass decent health care legislation but to block a plan to privatize Social Security.
Without the threat of Sergio Agüero, usually City's obvious dangerman, Mourinho's primary task was protecting the zone where Silva and De Bruyne operate.
A primary task was restoring the devastation of the dust bowl by planting nearly 3 billion trees to reforest degraded land.
