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