1.   But some doubt the seriousness of trying to legislate competition in a country that still tolerates monopolies in oil, electricity and railroads.

2.   Few doubt the seriousness of the situation.

3.   However, some analysts here doubt the seriousness of trying to legislate competition in a country that still tolerates monopolies in oil, electricity and railroads.

4.   Nobody doubts her seriousness, but she can also poke fun at her family and herself.

5.   Authorities said they doubted the seriousness of the threat but still informed the U.S. cruise ships of the risk.

6.   But few doubt the seriousness of the problems he has highlighted.

7.   Critics, however, doubt the seriousness of Estrada, who once confessed to being a drunkard and a womanizer, traits he said he has overcome.

8.   However, Hawas, whose authority extends over all the monuments in Egypt, is opposed to such investigation, doubting the seriousness of the enterprise.