is improving
He’s gradually improving.
Le français de Tom s'améliore.
Tom's French is improving.
Your French is improving.
Now it’s getting better!
Mon français s'améliore de jour en jour.
My French is improving day by day.
Your French is improving.
Le japonais de Tom s'améliore lentement.
Tom's Japanese is slowly improving.
J'irai vite fait si le temps s'améliore.
I’ll pop over quickly if the weather improves.