Задать общий, альтернативный специальный и разделительный вопросы к предложением Alecs parents have come back from Moscow и Liza is playing with her dog

Have Alec's parents come back from Moskow? Have Alec's parents come back from Moscow or Spain? Who have come back from Moscow ? Alec's parents have come back from Moscow , haven't they ? Is Lisa playing with her dog ? Is Lisa playing with her dog or cat ? Who is playing with dog? Lisa is playing with her dog , isn't she?