Write on / at /in.1.Swimming is ... 9 o'clock ... Mondays and Tuesdays.2.Art and crafts classes start ... 4 o'clock ... the afternoon.3.Cooking lessons begin ... 10 a.m. ... Wednesdays and Fridays.

1 at, on 2 at, in 3 at,on

1.Swimming is at 9 o'clock on Mondays and Tuesdays. Плавую в 9 часов по понедельникам и четвергам. 2.Art and crafts classes start at 4 o'clock in the afternoon. Классы рисования и труда стартуют в 4 часа днем. 3.Cooking lessons begin at 10 a.m. on Wednesdays and Fridays. Уроки кулинарии начинаются в 10 часов утра по средам и четвергам. Надеюсь что помогла!:D (еще перевод написала:))