Read the text. Fill in each gap with ONE word. You must use a word which is somewhere in the rest of the text. A pessimist is a person who always expects bad thing to happen. Pessimists think that today's cars are in trouble because they use too much gas. They say the (1)_________ of the future will be much, much smaller. They will have no heater and no air conditioner, it will have no radio and no lights. Tomorrow's car will be an open air car with no door and windows. It won't need a pollution control system because it won't use (2)_________. In fact, drivers will push this new cars with their fit. Very few people will be killed in accidents because the top'speed will be five miles per hour. However, (3)_________ warn us not to ask for pretty colors, because the car will came in grey only. Optimists are sure that the future will be happy. They think that car companies will soon solve all our problems by producing the super car. Tomorrow's car will be bigger, faster and more comfortable than before. The super car will have four rooms, colour TV, running water, heat, (4)_________ conditioner and swimming pool. Large families will travel on long trips in complete comfort. If gas is in short supply, the supercar will run on water. Finally, (5)_________ promise that the car of the future will come in any (6)_________ not only gray.