| They've tried to improve their procedures, with varying degrees of success. |
| By instituting these programs, we hope to improve our children's education. |
| The pupil normally dilates in the dark to improve vividity at night. |
| You can improve your knowledge of the natural world by study and observation. |
| Her plan is based on the underlying assumption that the economy will improve in the near future. |
| The state plans to improve roads that serve as connections between major highways. |
