sentence: If a car which emits no serious global - warming gases were developed , there would be no argument that people had better reduce their use of cars . Yet , as long as we are manufacturing them , we can not find more eco - friendly and efficient modes of transport than public transportation .
modified: If a car which emits no serious global warming gas would be developed , there would be no argument that people had better reduce our use of cars , yet , as long as we are manufacturing them we could not find more eco - friendly and efficient ways than public transportation .
transformation: PUNCT, NOUN:NUM, VERB:TENSE, DET, PUNCT, PUNCT, VERB:TENSE, OTHER