We have found ---- ---- ----(一些解决办法）the problem.some solutions of?

We have found ---- ---- ----(一些解决办法）the problem.some solutions of?
We have found ---- ---- ----(一些解决办法）the problem.
some solutions of?

We have found ---- ---- ----(一些解决办法）the problem.some solutions of?
TO THE PROBLEMS

可以这么用，
但一般都说: we have found some solutions for the problem

some solutions to