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