Lallana at the double as Liverpool down Boro

Dec 14 (Reuters) - - Adam Lallana scored twice as Liverpool returned to second in the Premier League with a 3-0 victory over Middlesbrough on Wednesday that revived their title push. Liverpool, who lost to Bournemouth and drew with West Ham United in their last two games, took the lead when Nathaniel Clyne's superb curling cross was met by Lallana at the far post to head home in the 29th minute. The victory moved Liverpool up to second on 34 points, above Arsenal on goals scored, but still six p