Mr Romney has a difficult task - to look presidential without adopting the duties.
Recruiting and retaining border patrol agents has been a difficult task for the federal agency.
They will now face a difficult task in the quarter-finals against an unbeaten US side.
Officials face a difficult task in reconstructing the fire that preceded the deadly explosion.
Treating heart failure in the hospital has been a difficult task for drug developers.
As a consequence, girls will often quit prematurely when faced with a difficult task.
This was a difficult task because this could have opened him up to charges of hypocrisy.
Not only is this a difficult task, the Internet has made sourcing incredibly difficult.
That is a difficult task and, indeed, one that Groupon itself has tried and failed.
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The delay in even starting that process is only making a difficult task harder.
Meanwhile, the Ocean Tracking Network is using gliders to track fish a difficult task.
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"I have to go there and dominate and that's a difficult task against Hopkins, " said the 36-year-old.
Selling more Europe will be a difficult task when the polls suggest increasing alienation from the European project.
Brooking also said that football faces a difficult task in convincing government and others that it needs money.
The transition to a legitimate government that is responsive to the Libyan people will be a difficult task.
Chris is a world-class kicker, so I fully understand it will be a difficult task to become first choice.
As children, we are told by our parents and teachers to try harder when faced with a difficult task.
If Chelsea beat the European Cup holders, Barcelona will face a difficult task to quality for the last 16.
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Considering both the complexity and fragility that is the Great Barrier Reef, these marine pilots face a difficult task.
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He has made a worthwhile but no better than that stab at a difficult task.
Isolating the factors that contribute to film tourism is a difficult task.
But proving just how much damage can be blamed on the oil spill will be a difficult task in the courtroom.
They made absolutely no effort at all to score quickly and leave England with a difficult task of batting out time.
Raising rates on a national sales tax would be a difficult task.
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To succeed, he would have to unite the warring factions of the LDP -- a difficult task at the best of times.
However, the 37-year-old Dane knows he faces a difficult task to repeat his 2007 and 2002 victories in the European Tour's flagship event.
With 12, 000 points of power and the ability to shatter three shields on contact, stopping Kurragar is going to be a difficult task.
While Chavez would hypothetically try to ramp up production, spending cuts and a lack of international funding would make this a difficult task.
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This bleak message resonates with what ordinary people in less developed countries would say about reform: Eradicating corruption will be a difficult task indeed.
Removing thousands of hardline settlers from other smaller, more isolated outposts would be a difficult task, however, even for the most secure of Israeli governments.
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