European shares finished ahead, reversing two days of loses.Banks were among the top gainers, along with drugmakers and the commodity sector. The US dollar hit a one year low against the euro helping crude oil rise over two percent and pushing up metals prices. Foreign exchange dealers took advantage of the dollar’s gains during the previous session to resume selling as the Federal Reserve’s two day policy meeting started and ahead of this week’s G20 summit. The FTSEurofirst 300 index of top European shares closed back up over 1,000. It has rallied nearly 56 percent since hitting a low in March and is on track to post its best quarterly rise in almost a decade. But analysts said the markets are getting a bit ahead of themselves and a pause could be on the cards.