Terms for subject Proverb containing it is ... which

English	Russian
it is a game at which two can play	посмотрим ещё, чья возьмёт
it is as well to know which way the wind blows	хорошо обо всём знать наперёд
when you go for a trip which is one day long, it is bread for seven days you should take along	едешь на день, хлеба бери на неделю