"concentrate on fixing" is correct and usable in written English.
You can use it when you want to emphasize the importance of addressing a problem or issue. For example, "We need to concentrate on fixing the water damage to the ceiling before it gets worse."
The question is whether it is fair to all golfers to price the new course at $45 to $50 a round in an attempt to make the course self-sustaining; or if the county should instead concentrate on fixing up its existing courses rather than spend money on a new one.
He said lawmakers in distant Washington should concentrate on fixing the immigration system.
"I just wanted to put it behind me and concentrate on fixing what I needed to fix.
As for Destination, it should concentrate on fixing its own elasticated problems rather than trying to take on Mothercare's.
A dwindling market share in its vital home market may have convinced Ford it needs to concentrate on fixing its business there.
Zurich's own half-year results on Thursday were weak, suggesting its shareholders might kill a £5.5bn offer and tell management to concentrate on fixing what they own already.
But the keepers of the flame had different priorities for the sixth-generation car, which will be unveiled today in Detroit: instead of inventing a whole new Corvette, Dave Hill, the chief engineer, concentrated on fixing small glitches in the old one.
Some fret that Chinese lift-owners are either maintaining the machines themselves or not at all.Schindler's Mr Tinggren says that concentrating on fixing old lifts rather than installing new ones is short-sighted.
SEAN BOOKER Minister to His Flock Sean Booker was a troubleshooting technician for Xerox, but his hours away from the job were concentrated on fixing something much dearer to him than office machinery: troubled souls.
The society could have downplayed the garden, which was overgrown, and concentrated on fixing up the house, but the garden held so much promise and it was obvious that it was once lovingly cared for.
This week, Yahoo continued with its prolific acquisition strategy with a one-two punch picking up companies working on video — a sign that, while some of its acquisitions have been basic talent grabs, at least a few of them have a very specific focus to them, concentrating on fixing its long-neglected video business.
