‘That’s odd,’ her voice was saying. ‘I could have sworn…’ The swearing that she could have been doing was having to do with the hearing of a knocking sound previously to the moment which was currently passing. Suddenly, a shadowy figure was looming in the doorway. A surprise attack was taking place. A screaming sound was being emitted by Olivia as she was being murdered.
— Let the passive tense be used, from How To Write Badly Well

