In general, second - and third - graders have a pretty firm grasp on what does and what does not constitute good behavior. (educationworld.com)
Even if I had a fairly firm grasp of what a diagnosis was, I would always call a colleague into the room to get a second opinion. (cover-letter-now.com)
After this experience, I had a much firmer grasp of the concept. (carolinaparent.com)