Помогите написать 5 предложений по английскому на правило(Если в конце глагола есть буква е то когда добавляется окончание

When I called she was celebrating her birthday.Adam was driving his car at 7 o\'clock yesterday.When my brother came I was writing a letter to my friend.When I was leaving St Petersburg I felt very upset.My mother was preparing dinner while I was playing with my dog.