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 The cave paintings of Lascaux were made in the Upper Old Stone age. 3 Rules are made to be broken. 4 Mistakes were made. 5 Insulin was first discovered in 1921 by researchers at the University of Toronto. It is still a treatment available for diabetes. 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.