Запоминаем два слова продвинутого уровня:

crawl [krɔːl] - ползать

stump [stʌmp] - ковылять

Для активации и тренировки грамматики будем использовать конструкцию should + have + V3 ("следовало"):

✦ You should have crawled quietly.

✦ They shouldn't have crawled so slowly.

✦ I should have stumped more carefully.

✦ She should have supported me when I stumped.

✦ They shouldn't have left those who crawled and stumped.

Автор - Анатолий Тверитнев

https://vk.com/tveritnev_rules