“Expose” is a verb that is not that is not that common, but nevertheless candidates should know and be able to use in the B2 First exam. It means to make something bad or dishonest public knowledge. It is most commonly used in news articles.
The reporter (2)…… the widespread corruption that was occurring in the company.
…I think that athletes or a caught cheating should be exposed so the public are aware of what they have done…