1.   But few authorities doubt that corruption continues to make Mexico a virtually risk-free drug corridor.

2.   He added that the authorities also doubted that left-wing guerrilla groups were responsible.

3.   Law enforcement authorities doubted his account and believed he dropped out to arrange a truce with his enemies in the Mafia.

4.   Most authorities doubt that Indiana or other states will return soon to a time of plenty because of two serious structural problems.

5.   Some Western authorities doubt that a Likud government would be able to do much to solve the complex crisis.

6.   But French authorities doubted the claim Tuesday, saying a search had failed to turn them up.

7.   But French authorities doubt the claim, saying a search has failed to turn them up.

8.   Colombian authorities do not doubt that the call for help came from one of the men.

9.   This has led many analysts, and dealers on financial markets, to question whether German authorities doubt that the deadline can be achieved.