The government promised not _______________ (to increase, increasing) the prices of train travel. Many people enjoy _____________ (to travel, travelling) by plane. We suggest ____________(to find, finding)alternative sources of fuel. People want ____________ (to travel, travelling) cheaply. Oil companies are considering __________ (to raise, raising) petrol prices. The government plans _____________ (to change, changing) their policy on air travel. We can expect _______________ (to see, seeing) a rise in the number of people who own cars. I have decided _______________(to commute, commuting)to work by bus.