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