Lately, I've been letting my English go. It seems I'll never improve at it, no matter how many years I study. ✬

I made efforts to improve my grades. ✬

Tom is working hard to improve his English. ✬

Tom really wants to improve. ✬

I think if I talked more often with a native speaker, my English skills would improve quickly. ✬

Tom needs to improve his people skills. ✬

Tom is doing everything within his power to improve the patients' quality of life. ✬

I just want to improve as much as I can. ✬

It's time for us to start thinking about how we can improve the situation. ✬

This will improve the performance. ✬