1.   He was able to grasp complex issues quickly.

2.   Reyes Heroles is well-respected for his ability to quickly grasp complex issues.

3.   For Booker, helping others to grasp the issue became her salvation and her curse.

4.   Rather, they tended to fault themselves for failing to grasp the issues.

5.   The students could not possibly grasp the issue, she said.

6.   He had trouble grasping complicated issues and relied heavily on his experts.

7.   He had trouble grasping complicated issues, and relied heavily on his experts.