* He looked at the offer dubiously, wondering if it was too good to be true. (Implies skepticism)
* The politician's claims were received dubiously by the audience, who had heard similar promises before. (Implies doubt)
* She smiled dubiously, not quite believing his explanation. (Implies uncertainty)
* The evidence presented was dubiously connected to the suspect, raising questions about its validity. (Implies the evidence is questionable)
Note: "Dubiously" often implies a negative connotation, suggesting doubt, skepticism, or uncertainty about something.