When I came (come) home, my parents were watching (watch) TV and my elder brother had gone (go) to the cinema. When Mike arrived (arrive) at the theatre, he found that the play had begun (begin), and the actors had been playing (play) on the stage for some minutes.
Ответ: When I came home, my parents were watching TV and my elder brother had gone to the cinema. When Mike arrived at the theatre, he found that the play had begun, and the actors had been playing on the stage for some minutes.