can you think of a solution _____ the problem A.for B.at C.to D.with

can you think of a solution _____ the problem A.for B.at C.to D.with
can you think of a solution _____ the problem A.for B.at C.to D.with

can you think of a solution _____ the problem A.for B.at C.to D.with
C.to
a solution to...
...的解决方案（答案）
类似的还有
key to a problem
answer to a problem
问题的解决方案,答案

C.to固定搭配来着，the solution to the problem.

c