Question

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.

Answer 1

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

Answer 2

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:))