Which of the following sentences is written in the passive voice?
A. The effects of cyanide are well known.
B. They considered their options.
C. Having left the building, Elvis never returned.
D. I would not provoke that man if I were you.

Respuesta :

The sentence that is written in the passive voice is letter C: Having left the building, Elvis never returned.  

It is a passive type of a sentence, meaning the subject is indirect, with comma, or uses ‘by’ or im this case ‘with’. Here, the verb used is past while in active sentence, the verb used is in present tense and is direct in giving out information. If the sentence is changed into active form of the sentence, it could be: