Relacionar Columnas Passive useVersión en línea Match the uses to the examples por Janssens Joyce 1 Insulin was first discovered in 1921 by researchers at the University of Toronto. It is still a treatment available for diabetes. 2 Rules are made to be broken. 3 An experimental solar power plant will be built in the Australian desert. 4 The cave paintings of Lascaux were made in the Upper Old Stone age. 5 Mistakes were made. You want to be vague about who is responsible. The actor is irrelevant. You want to emphasize the person or thing acted on. The actor is unknown. You are talking about a general truth.