sentence: On the other hand , public transport is the only resource some people have to get around , and more than excellent for the environment , it 's also a good way to avoid traffic and spending money on petrol , since it 's cheaper if you catch a bus .
modified: On the other hand , public transport are the only resource some people have to move on , and more than excellent to the environment , it 's also a good way to avoid traffic and spend money on petrol , once it 's cheaper if you catch a bus .
transformation: VERB:SVA, OTHER, PREP, VERB:FORM, OTHER