Вопрос 22
Преобразуйте, если это необходимо, слово BE так, чтобы оно грамматически соответствовало содержанию текста.
In countries which are located near sea coasts, sea food is an important part of national cuisine. Since ancient times, different kinds of fish and seafood __________________ staple diets near the coast or near certain rivers and lakes.