How to Use "darkly" with Example Sentences

1. They dropped bombs , she says darkly .
2. The way something like an 808 kick drum loops its way darkly into " red sun no. 5 " .
3. Others talked darkly of a possible " setup " of mr. sarkozy 's most prominent rival .
4. Defarge and the three glanced darkly at one another .
5. His father was frowning at her darkly .