Ответ:
В каждом предложении выбран правильный союз: and соединяет два действия; but выражает противопоставление; because указывает причину; so — следствие.
Dad sets the table for dinner and Healy helps him. I love swimming, but I can’t go to the pool every day. I go to bed early on weekdays because I have school in the morning. Mum opens her shop at 8.30, so she leaves home at 7.45.
