In the future, many buildings will be ……. by solar energy. A. hot B. hoter C. hottest D. hotter

Greater use of public transport would cut the amount of pollution from cars. A. Were more people to use public transport, cars would stop releasing exhaust into the atmosphere. B. If more people use public transport, it will cut the amount of pollution from cars. C. If public transport was widely used, people would no longer suffer from pollution from cars. D. If more people used public transport, there would be less pollution from cars.