Question

say what they were doing when it began raining

Answer 1

When it began raining, Bob and Ken were catching a bus.
When is began raining, Rose and ( не видно имени) were playing tennis.
When it began raining,Mr Barker was driving a car.
When it began raining, Sally was walking with his dog.
When it began raining, (не видно имени) was playing the piano.