zlepšit se
improve, get/become better, (form.)  ameliorate
        Trošku se to zlepšilo.
          It got a little better., It improved a little. 
          Zlepšila se ve škole.
          Her grades have improved/gone up. 
          
hə greɪdz hæv ɪmˈpruːvd/gɒn ʌp
        Výrazně se zlepšil v angličtině.
          He improved his English substantially. 
          Pořád se zlepšují.
          They keep improving. 
          Stav pacienta se zlepšil.
          The patient has got better. 
          