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Одна деталь вызывает недоумение. 6 предложений с to be +наречие частоты

1) They always say that russian girls are the most beautiful.
2) I have often been in this bakeshop.
3) The weather in St. Petersburg is always rainy.
4) Usually I am friendly, but not today.
5) I have never been in Venice.
6) Sometimes it is cold.