At B2 level, the passive voice extends to perfect tenses (has/have been done, had been done, will have been done) and reporting structures used in news and formal writing: It is believed that… / She is thought to have left…
Choose the correct passive form. These sentences use perfect tenses in the passive.
At B2 level you need to use the passive across all tenses, and master passive with reporting verbs: structures common in news, academic texts, and formal writing.
Used in news and formal writing to report what people say, believe, or think: without naming the source.