sentence: In conclusion , public transportation will still play an important role in transportation in a city , unless environmentally - friendly vehicles are promoted by the government and the roads and highways in a city are managed well to accommodate a huge number of cars .
modified: In conclusion , public transportation would still pay an important role of transportation in a city unless the environmental vehicles are promoted by the government and the roads and highways in a city are managed well for accommodating a huge number of cars .
transformation: VERB:TENSE, VERB, PREP, PUNCT, DET, OTHER, PART, VERB:FORM