11.   Skeptics doubt that disease management can be profitable for most drug companies, though.

12.   Skeptics have long doubted values can be learned in school.

13.   Still, some skeptics doubt that virtual shopping will ever take the place of hands-on browsing.

14.   The skeptics can no longer doubt Natalie Merchant.

15.   Skeptics already doubt whether foreign investment will be forthcoming at all after the abrupt exodus.

16.   Some skeptics doubt that the relatively expensive radio sets will sell well, even in wealthy Singapore.