Commuters had an unpleasant surprise Wednesday morning as prices at the gas pumps spiked as high as $1.20 a litre in response to high oil prices. Gas prices soared on average to $1.10 a litre across the country, two cents higher than Calgary-based pump watcher MJ Ervin's reported national average price of $1.088 last week. It's also nearly a 20 cent rise since last year. The average price per litre was $0.915 on Feb. 20, 2007. Montreal's prices were the highest in the country Wednesday, at $1.20. Ghazi Aasim, filling his car at a Montreal gas station, said he was only filling his tank halfway in case prices dropped. "You have to take a gamble every time you go to the gas pump ... It's just a game," he said. "I guess if it continues like this for a couple of months, it's going to hurt my pockets." In Calgary, prices jumped to $1.04 per litre after hovering around the loonie mark for the past week. Commuters in the Greater...