11.   She made a valiant attempt to fix the problem.

12.   It should only take a moment to fix the problem.

13.   We need to think about how best to fix this problem.

14.   It will take considerable ingenuity to fix these problems.

15.   The mechanic fixed the problem with the car.

16.   The problems have been fixed and the work can now proceed.

17.   Although it agreed to fix the problem, Pennwalt did not admit any wrongdoing.

18.   Although their builders tried to accommodate them, it was either too late or too expensive to fix the problems.

19.   Alvarez said Rowsome had called for Pantex to be shut down until its safety problems had been fixed.

20.   Americans are going to die in that crash and Congress will have to try to fix the problem.