much/a lot/ a bit
Dad promises he’ll live ... (healthy).
Dad promises he’ll live more healthily.
My brother promises he’ll cook.... (good)
My brother promises he’ll cook better.
She/speaks English fluently/he
She speaks English a bit/a little more fluently than he.
St. Petresburg/small/Moscow
St.Petersburg is a bit smaller than Moscow
My grandfather promises he’ll speak..... (quiet)
My grandfather promises he’ll speak more quietly.
My grandmother promises she’ll drive..... (slow)
My grandmother promises she’ll drive more slowly.