Doubts remain about whether his health will allow him to return to active politics.
Doubts remain about the authenticity of the latest letters, but the French take all warnings seriously.
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And with only seven first-class matches to his name, doubts remain over 26-year-old Beer's lack of experience.
Doubts remain over whether the country will be able to cope with an influx of approximately 400, 000 fans.
Doubts remain that Twitter's ad business which is about two years old will ever be as big as Facebook's or Google's.
Indeed, despite North Korea's recent diplomatic overtures, doubts remain about its real motives.
Even if the Greek bailout is finally agreed and private investors agree to take losses of more than 50%, doubts remain.
But doubts remain about how accurate and useful such insights will be.
But doubts remain about security at nuclear power plants (see article).
Moreover, serious doubts remain about Deutsche's ability to integrate Bankers Trust successfully.
Some doubts remain about the government's willingness to push through financial reform.
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Netflix is up 77%, thanks largely to a surprise quarterly profit, but doubts remain about its success in keeping and adding subscribers with original content.
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He is yet to be sworn in for his new term, and doubts remain about whether his health will allow him to return to active politics.
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Doubts remain, though, about the effect these platforms could have on inflating the valuations of companies and leading to a much dreaded bubble, especially in tech.
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Yuvraj injured his finger two days before the tournament, which saw India fail to reach the semi-finals, and despite his inclusion in the squad to face the Aussies, doubts remain about his health.
But even so, doubts remain about how it could fully participate as a normal country in such organisations without producing the sort of economic detail it has always been unable or unwilling to provide.
He was brought back into the side for the third Test at Edgbaston due to Kevin Pietersen's withdrawal through injury and responded with 53 in the first innings but doubts remain about his temperament at the highest level.
The Surrey left-hander came back from a similar slump in the build-up to last year's tour of Australia to hit 116 at Brisbane but doubts remain over his suitability to open the attack when England meet South Africa in the First Test.
And doubts remain about the agenda for a meeting next month of the People's Consultative Assembly, a parliamentary group which until now has been responsible for choosing the president and vice-president, and which is now supposed to approve a new election law and confirm the election timetable.
Doubts would remain whether the Fed would announce fresh action at its next policy meeting later this month.
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The Scarlets have no fresh injury concerns ahead of the game, but Morgan Stoddart (knee), Iestyn Thomas (neck) and Darren Daniel (calf) remain doubts.
As long as Mr Hussein remains in power, doubts will inevitably remain, and it must be assumed that at some stage, maybe soon, he will once again challenge the Security Council's authority.
Histon will be without defender Lanre Oyebanjo (knee) whilst Craig Hammond, Bradley Hudson-Odoi and Neil Andrews remain as doubts.
And do you have any long-term doubts about your ability to remain vice president?
Will Pyongyang, or Washington, want their bilateral dialogue to remain the major channel for tackling weapons of mass destruction: missiles, lingering nuclear doubts, and the ungrasped nettle of chemical and biological warfare?
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