Identify the voice: 'The report was submitted by the committee.'

This sentence is in the passive voice. The structure follows the standard passive form: object of the active sentence ('the report') becomes the subject, followed by the appropriate form of the verb 'to be' ('was'), the past participle of the main verb ('submitted'), and the doer of the action introduced by 'by' ('the committee'). In active voice, the sentence would read: 'The committee submitted the report.' Passive voice is used when the action or the receiver of the action is more important than the doer.