Как учить слова? купить словарь и зубрить по алфавиту их?

how long did it take mary to learn this poem by heart?

1how   is your mum? she's fine,thanks.2how are your parents? they're ok.3how are you? i'm very well,thanks you.4how is your uncle? he's fine,thanks.5how are your children? they're  ok.6how is liz? she's  fine,thanks.7how is your cousin? she's/he's  very well,thank you  .