Subject-verb agreement with “none”

At one time, the verb that followed none was always singular. Now, the choice of the verb depends on the context. See if you know when the verb should be singular or plural in the following sentences.

1. None of the cake Placeholder for the answer been eaten by the partygoers.
2. None of the students Placeholder for the answer invited to make a speech.
3. None of these swimmers Placeholder for the answer their flippers in the pool.
4. None of the money Placeholder for the answer ever found.
5. None of the experts Placeholder for the answer with the research findings.
6. None of these actors Placeholder for the answer an Oscar winner.
7. None of these athletes Placeholder for the answer to sell their equipment.
8. None of the clothing Placeholder for the answer appropriate for the event.