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