Англ.мова, срочно! Заповніть in, on, at. 1) It's usually snowy ___ winter. 2) In France it's often sunny ___ the beginning of September. 3) American people celebrate Thanksgiving Day ___ the 4th of November. 4) It is usually cold and windy ___ November. 5) Ukrainian children don't go to school ___ Saturdays. 6) English children have Sports Day at school ___ the middle of June. 7) We sometimes go to the river ___ Sunday morning ___ summer.