1.   And some USC officials doubt the credibility of the tape.

2.   A damage estimate was not determined Monday, but officials doubted any contents could be salvaged.

3.   Across the border, Massachusetts officials doubt those steps make sense.

4.   Administration officials doubt the issue will provoke Russian nationalists.

5.   But because the sign will soon come down, Dome officials doubt they will apply for Guinness certification.

6.   But Chinese officials doubt that.

7.   But Haitian and Bahamian officials doubt it.

8.   But one league official doubted that the union could stage exhibition games at all.

9.   But some government officials doubted whether or not he had been completely forthcoming in sharing information about his years as a spy for the Russians.

10.   CNN reported that U.S. intelligence officials doubted Russian claims that the crew survived the explosion.