The only solution seems to be acceptance of an international city, open to all.
The last solution seemed to make most sense to him.
I now found myself faced by a problem for which there seemed no solution.
The second solution, unfortunately, would seem to be the most likely.
A peaceful solution to the conflict now seemed to be impossible.
His proposed solutions seem, in general, to be both tough and smart.
The solution seemed to be to drive a stake through his heart once and for all.
But experienced workers are in short supply, and a quick solution does not seem likely.
One solution might seem to be to start production earlier.
The only practical solution seems to be for us to split up the control each day.